# Error Message List {.newlabel-2024-10-29}
> **"Unknown error has occurred."**(Unity/Unreal Engine/Settings)
> **"Unknown error has occurred.** \
> **Please re-select the device to connect to."** \
> (Settings)
**Explanation** \
This message is displayed when an unknown error occurs.
> **"Failed to detect Spatial Reality Display. Make sure Display cable is connected correctly between PC and Spatial Reality Display.** \ > **Please re-select the device to connect to."** \ > (Settings) > **"Failed to detect Spatial Reality Display. Make sure Display cable is connected correctly between PC and Spatial Reality Display.** \ > **The application will be terminated."** \ > (Unity/Unreal Engine/Settings) **Explanation** \ The Spatial Reality Display could not be detected. The USB 3.0 cable may not be connected correctly between the computer and the Spatial Reality Display (ELF-SR1). \ **Solution** \ Make sure the USB 3.0 cable is correctly connected between the computer and the Spatial Reality Display (ELF-SR1), and power on Spatial Reality Display (ELF-SR1).
> **"Failed to detect Spatial Reality Display. Make sure USB 3.0 cable is connected correctly between PC and Spatial Reality Display.** \ > **The application will be terminated."** \ > (Unreal Engine/Settings) **Explanation** \ Failed to detect Spatial Reality Display(ELF-SR1). USB 3.0 cable may be not connected correctly between PC and Spatial Reality Display(ELF-SR1). \ **How to deal with** \ Make sure USB 3.0 cable is connected correctly between PC and Spatial Reality Display(ELF-SR1), and Spatial Reality Display(ELF-SR1) is powered on.
> **"Failed to detect Spatial Reality Display. Make sure USB cable is connected correctly between PC and Spatial Reality Display, and Spatial Reality Display device is powered on.** \ > **Please re-select the device to connect to."** \ > (Settings) > **"Failed to detect Spatial Reality Display. Make sure USB cable is connected correctly between PC and Spatial Reality Display, and Spatial Reality Display device is powered on.** \ > **The application will be terminated."** \ > (Unity/Unreal Engine/Settings) **Explanation** \ The Spatial Reality Display could not be detected. The USB cable may not be connected correctly between the computer and the Spatial Reality Display. \ **Solution** \ Make sure the USB cable is correctly connected between the computer and the Spatial Reality Display, and power on the Spatial Reality Display.
> **"Failed to find Spatial Reality Display device. Make sure Spatial Reality Display device is powered on.** \ > **The application will be terminated."** \ > (Unity/Unreal Engine/Settings) **Explanation** \ The Spatial Reality Display device could not be found. The Spatial Reality Display device's power may be turned off. \ **Solution** \ Power on the Spatial Reality Display.
> **"Display connection has been interrupted. The Display cable may be disconnected."** (Unity) **Explanation** \ The connection between the computer and the Spatial Reality Display was interrupted while the application was running. \ **Solution** \ Check the display cable between the computer and the Spatial Reality Display and make sure it is connected correctly.
> **"USB connection has been interrupted. The USB cable may be disconnected or SR Display's power may be turned off.** \ > **The application will be terminated."** \ > (Settings) > **"USB connection has been interrupted. The USB cable may be disconnected or Spatial Reality Display device's power may be turned off.** \ > **The application will be terminated."** \ > (Unity/Unreal Engine) **Explanation** \ The USB communication was interrupted. The USB cable may be disconnected or the Spatial Reality Display device's power may be turned off. \ **Solution** \ Please check the USB cable connection and make sure the Spatial Reality Display device's power is turned on.
> **"SR Display SDK is not found. SR Display SDK may be not installed correctly. Try to re-install with SR Display installer.** \ > **Please re-select the device to connect to."** \ > (Settings) > **"SR Display SDK is not found. SR Display SDK may be not installed correctly. Try to re-install with SR Display installer.** \ > **The application will be terminated."** \ > (Settings) > **"Spatial Reality Display SDK is not found. Spatial Reality Display SDK may be not installed correctly. Try to re-install with Spatial Reality Display Settings Installer.** \ > **The application will be terminated."** \ > (Unity/Unreal Engine) **Explanation** \ The Spatial Reality Display SDK could not be found. The Spatial Reality Display SDK may not be installed correctly. \ **Solution** \ Install or re-install the Spatial Reality Display SDK.
> **"Another Spatial Reality Display application is already running. Please close it and start this application again.** \ > **The application will be terminated."** \ > (Unity/Unreal Engine) **Explanation** \ This Application cannot start because another Spatial Reality Display application is already running. \ **Solution** \ Close any other Spatial Reality Display application that is currently running then start this application.
> **"SR Display is not recognized correctly.** \ > **Please make sure SR Display and PC's USB 3.0 port are connected with USB3.0 cable.** \ > **Also, please try following steps.** \ > \ > **1. Unplug USB cable from PC's USB 3.0 port.** \ > **2. Turn Spatial Reality Display device's power off.** \ > **3. Plug USB cable into PC's USB 3.0 port.** \ > **4. Wait for 30 seconds.** \ > **5. Turn Spatial Reality Display device's power on.** \ > **6. Launch this application again."** \ > (Unreal Engine/Settings) > **"Spatial Reality Display is not recognized correctly. Please make sure Spatial Reality Display and PC's USB 3.0 port are connected with USB3.0 cable. Also, please try following steps.** \ > **1. Unplug USB cable from PC's USB 3.0 port.** \ > **2. Turn Spatial Reality Display device's power off.** \ > **3. Plug USB cable into PC's USB 3.0 port.** \ > **4. Wait for 30 seconds.** \ > **5. Turn Spatial Reality Display device's power on.** \ > **6. Launch this application again."** \ > (Unity) **Explanation** \ The Spatial Reality Display could not be recognized correctly. \ **Solution** \ Please follow the steps in the message.
> **"The old version of the Spatial Reality Display SDK has been installed.** \ > **The Spatial Reality Display Settings Installer version 2.0 or later is required to run this application."** \ > (Unity/Unreal Engine) **Explanation** \ The application requires the Spatial Reality Display SDK version 2.0 or later, but an older version of the Spatial Reality Display SDK is currently installed on your computer. \ **Solution** \ Install the version 2.0 or later of the Spatial Reality Display SDK.
> **"The Spatial Reality Display SDK version [2.4.0] or later is required to run this application. The currently installed version is [2.3.0].** \ > **Please re-install the Spatial Reality Display SDK with the latest version of the Spatial Reality Display Settings Installer.** \ > \ > **The application will be terminated."** \ > (Unity) **Note** \ The version numbers inside the brackets [] will reflect the actual values. \ **Explanation** \ This message is displayed if the application requires a newer version of the Spatial Reality Display SDK than the one currently installed. \ **Solution** \ Re-install the latest version of Spatial Reality Display SDK.
> **"An older version of the Spatial Reality Display SDK is installed.** \ > **The Spatial Reality Display Settings Installer version 2.4.0 or later is required to run this application."** \ > (Unreal Engine) **Explanation** \ The application uses features that require version 2.4.0 or later of the Spatial Reality SDK to be installed on the computer. \ **Solution** \ Re-install Spatial Reality Display Settings 2.4.0 or later.
> **"The number of Spatial Reality Displays detected [3] is less than the number set in the project settings [4]."** (Unity/Unreal Engine) **Note** \ The numbers inside the brackets [] will reflect the actual values. \ **Explanation** \ This message is showed for Multi Display applications if the number of Spatial Reality Displays connected to the computer is less than the number of Spatial Reality Displays required by the application. \ **Solution** \ Connect the number of Spatial Reality Displays required by the application to the computer.
> **"The Multi Display Mode set in the project settings ([Vertical]) does not match that of the Spatial Reality Display Settings ([Horizontal])."** (Unity/Unreal Engine) **Note** \ The Multi Display modes inside the brackets [] will reflect the actual values. \ **Explanation** \ The Multi Display mode required by the application and the Multi Display mode set in the Spatial Reality Display Settings are different. \ **Solution** \ Change the Multi Display mode in the Spatial Reality Display Settings to match the Multi Display mode required by the application.
> **"No Spatial Reality Display is connected. Please make sure that Spatial Reality Display is connected with your PC correctly."** (Unity) **Explanation** \ This message is displayed when trying to display the SRDisplay GameView inside the Unity Editor, but no Spatial Reality Display was found. \ **Solution** \ Make sure the Spatial Reality Display is turned on and that the display cable between the computer and the Spatial Reality Display is connected correctly.
> **"Spatial Reality Display device is not selected."** (Unity) **Explanation** \ "SRDisplay GameView(Full Screen)" is not selected in the Unity Editor, therefore the preview cannot be started. \ **How to deal with** \ In the Unity Editor, please select "SRDisplay GameView(Full Screen)" from the "SpatialRealityDisplay" menu.
> **"Spatial Reality Display Plugin does not support "Mobile Preview ES3.1 (PIE)"."** (Unreal Engine) **Explanation** \ This message will be displayed if you select "Standalone Game Mobile" because the Plugin for Unreal Engine is not supported. \ **Solution** \ Please use "VR Preview" instead.
> **"Failed to detect Spatial Reality Display. Make sure Display cable is connected correctly between PC and Spatial Reality Display.** \ > **Please re-select the device to connect to."** \ > (Settings) > **"Failed to detect Spatial Reality Display. Make sure Display cable is connected correctly between PC and Spatial Reality Display.** \ > **The application will be terminated."** \ > (Unity/Unreal Engine/Settings) **Explanation** \ The Spatial Reality Display could not be detected. The USB 3.0 cable may not be connected correctly between the computer and the Spatial Reality Display (ELF-SR1). \ **Solution** \ Make sure the USB 3.0 cable is correctly connected between the computer and the Spatial Reality Display (ELF-SR1), and power on Spatial Reality Display (ELF-SR1).
> **"Failed to detect Spatial Reality Display. Make sure USB 3.0 cable is connected correctly between PC and Spatial Reality Display.** \ > **The application will be terminated."** \ > (Unreal Engine/Settings) **Explanation** \ Failed to detect Spatial Reality Display(ELF-SR1). USB 3.0 cable may be not connected correctly between PC and Spatial Reality Display(ELF-SR1). \ **How to deal with** \ Make sure USB 3.0 cable is connected correctly between PC and Spatial Reality Display(ELF-SR1), and Spatial Reality Display(ELF-SR1) is powered on.
> **"Failed to detect Spatial Reality Display. Make sure USB cable is connected correctly between PC and Spatial Reality Display, and Spatial Reality Display device is powered on.** \ > **Please re-select the device to connect to."** \ > (Settings) > **"Failed to detect Spatial Reality Display. Make sure USB cable is connected correctly between PC and Spatial Reality Display, and Spatial Reality Display device is powered on.** \ > **The application will be terminated."** \ > (Unity/Unreal Engine/Settings) **Explanation** \ The Spatial Reality Display could not be detected. The USB cable may not be connected correctly between the computer and the Spatial Reality Display. \ **Solution** \ Make sure the USB cable is correctly connected between the computer and the Spatial Reality Display, and power on the Spatial Reality Display.
> **"Failed to find Spatial Reality Display device. Make sure Spatial Reality Display device is powered on.** \ > **The application will be terminated."** \ > (Unity/Unreal Engine/Settings) **Explanation** \ The Spatial Reality Display device could not be found. The Spatial Reality Display device's power may be turned off. \ **Solution** \ Power on the Spatial Reality Display.
> **"Display connection has been interrupted. The Display cable may be disconnected."** (Unity) **Explanation** \ The connection between the computer and the Spatial Reality Display was interrupted while the application was running. \ **Solution** \ Check the display cable between the computer and the Spatial Reality Display and make sure it is connected correctly.
> **"USB connection has been interrupted. The USB cable may be disconnected or SR Display's power may be turned off.** \ > **The application will be terminated."** \ > (Settings) > **"USB connection has been interrupted. The USB cable may be disconnected or Spatial Reality Display device's power may be turned off.** \ > **The application will be terminated."** \ > (Unity/Unreal Engine) **Explanation** \ The USB communication was interrupted. The USB cable may be disconnected or the Spatial Reality Display device's power may be turned off. \ **Solution** \ Please check the USB cable connection and make sure the Spatial Reality Display device's power is turned on.
> **"SR Display SDK is not found. SR Display SDK may be not installed correctly. Try to re-install with SR Display installer.** \ > **Please re-select the device to connect to."** \ > (Settings) > **"SR Display SDK is not found. SR Display SDK may be not installed correctly. Try to re-install with SR Display installer.** \ > **The application will be terminated."** \ > (Settings) > **"Spatial Reality Display SDK is not found. Spatial Reality Display SDK may be not installed correctly. Try to re-install with Spatial Reality Display Settings Installer.** \ > **The application will be terminated."** \ > (Unity/Unreal Engine) **Explanation** \ The Spatial Reality Display SDK could not be found. The Spatial Reality Display SDK may not be installed correctly. \ **Solution** \ Install or re-install the Spatial Reality Display SDK.
> **"Another Spatial Reality Display application is already running. Please close it and start this application again.** \ > **The application will be terminated."** \ > (Unity/Unreal Engine) **Explanation** \ This Application cannot start because another Spatial Reality Display application is already running. \ **Solution** \ Close any other Spatial Reality Display application that is currently running then start this application.
> **"SR Display is not recognized correctly.** \ > **Please make sure SR Display and PC's USB 3.0 port are connected with USB3.0 cable.** \ > **Also, please try following steps.** \ > \ > **1. Unplug USB cable from PC's USB 3.0 port.** \ > **2. Turn Spatial Reality Display device's power off.** \ > **3. Plug USB cable into PC's USB 3.0 port.** \ > **4. Wait for 30 seconds.** \ > **5. Turn Spatial Reality Display device's power on.** \ > **6. Launch this application again."** \ > (Unreal Engine/Settings) > **"Spatial Reality Display is not recognized correctly. Please make sure Spatial Reality Display and PC's USB 3.0 port are connected with USB3.0 cable. Also, please try following steps.** \ > **1. Unplug USB cable from PC's USB 3.0 port.** \ > **2. Turn Spatial Reality Display device's power off.** \ > **3. Plug USB cable into PC's USB 3.0 port.** \ > **4. Wait for 30 seconds.** \ > **5. Turn Spatial Reality Display device's power on.** \ > **6. Launch this application again."** \ > (Unity) **Explanation** \ The Spatial Reality Display could not be recognized correctly. \ **Solution** \ Please follow the steps in the message.
> **"The old version of the Spatial Reality Display SDK has been installed.** \ > **The Spatial Reality Display Settings Installer version 2.0 or later is required to run this application."** \ > (Unity/Unreal Engine) **Explanation** \ The application requires the Spatial Reality Display SDK version 2.0 or later, but an older version of the Spatial Reality Display SDK is currently installed on your computer. \ **Solution** \ Install the version 2.0 or later of the Spatial Reality Display SDK.
> **"The Spatial Reality Display SDK version [2.4.0] or later is required to run this application. The currently installed version is [2.3.0].** \ > **Please re-install the Spatial Reality Display SDK with the latest version of the Spatial Reality Display Settings Installer.** \ > \ > **The application will be terminated."** \ > (Unity) **Note** \ The version numbers inside the brackets [] will reflect the actual values. \ **Explanation** \ This message is displayed if the application requires a newer version of the Spatial Reality Display SDK than the one currently installed. \ **Solution** \ Re-install the latest version of Spatial Reality Display SDK.
> **"An older version of the Spatial Reality Display SDK is installed.** \ > **The Spatial Reality Display Settings Installer version 2.4.0 or later is required to run this application."** \ > (Unreal Engine) **Explanation** \ The application uses features that require version 2.4.0 or later of the Spatial Reality SDK to be installed on the computer. \ **Solution** \ Re-install Spatial Reality Display Settings 2.4.0 or later.
> **"The number of Spatial Reality Displays detected [3] is less than the number set in the project settings [4]."** (Unity/Unreal Engine) **Note** \ The numbers inside the brackets [] will reflect the actual values. \ **Explanation** \ This message is showed for Multi Display applications if the number of Spatial Reality Displays connected to the computer is less than the number of Spatial Reality Displays required by the application. \ **Solution** \ Connect the number of Spatial Reality Displays required by the application to the computer.
> **"The Multi Display Mode set in the project settings ([Vertical]) does not match that of the Spatial Reality Display Settings ([Horizontal])."** (Unity/Unreal Engine) **Note** \ The Multi Display modes inside the brackets [] will reflect the actual values. \ **Explanation** \ The Multi Display mode required by the application and the Multi Display mode set in the Spatial Reality Display Settings are different. \ **Solution** \ Change the Multi Display mode in the Spatial Reality Display Settings to match the Multi Display mode required by the application.
> **"No Spatial Reality Display is connected. Please make sure that Spatial Reality Display is connected with your PC correctly."** (Unity) **Explanation** \ This message is displayed when trying to display the SRDisplay GameView inside the Unity Editor, but no Spatial Reality Display was found. \ **Solution** \ Make sure the Spatial Reality Display is turned on and that the display cable between the computer and the Spatial Reality Display is connected correctly.
> **"Spatial Reality Display device is not selected."** (Unity) **Explanation** \ "SRDisplay GameView(Full Screen)" is not selected in the Unity Editor, therefore the preview cannot be started. \ **How to deal with** \ In the Unity Editor, please select "SRDisplay GameView(Full Screen)" from the "SpatialRealityDisplay" menu.
> **"Spatial Reality Display Plugin does not support "Mobile Preview ES3.1 (PIE)"."** (Unreal Engine) **Explanation** \ This message will be displayed if you select "Standalone Game Mobile" because the Plugin for Unreal Engine is not supported. \ **Solution** \ Please use "VR Preview" instead.