Other Issues

Calibration files not visible in file browser

Explanation

If the calibration file is not visible when using the Load Calibration File button or the Assign Calibration Files tool and the calibration file is an XCP file exported by Vicon Nexus, the file browser window may be filtering for TXT files only.

Possible Solutions

Use the dropdown file filter selector in the file browser window to allow XCP files to be shown.

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Theia3D freezes when attempting to open the application

Explanation

If Theia3D is failing to launch fully and is freezing after creating the main application window, this issue typically occurs after a change to the computer monitor setup.

Possible Solutions

To resolve this issue, open the Windows Registry Editor and navigate to the folder: Computer\HKEY_CURRENT_USER\Software\Theia. Right-click on the “Theia” folder, and choose delete. Close the Registry Editor, and restart the computer. After restarting, attempt to open Theia3D. This should allow the application to launch fully.

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Theia3D crashes when attempting to process a calibration or movement trial

Explanation

If Theia3D crashes when processing a calibration or movement trial, this issue is usually due to the GPU RAM becoming maxed out immediately when attempting to perform the processing. Typically, the root cause of this issue is too high of a GPU RAM requirement from the computer monitor setup, usually due to the use of multiple monitors or individual very high resolution monitors.

Possible Solutions

To reduce the GPU RAM requirements, try reducing the number or resolution of the monitors connected to the GPU.

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Not enough GPU Memory to Run Theia

Explanation

Theia3D requires a minimum amount of 8 GB dedicated GPU memory to process video data for markerless motion capture. If your system's GPU does not have enough, Theia3D may fail to launch, crash during processing, or display a “Not enough GPU memory” error.

Possible Solutions

Ensure the PC meets the minimum specifications found in the System Requirements. If the PC does meet the specifications, close any non-essential applications that may be utilizing GPU resources in the background, and perform a system reboot to clear any residual memory allocations that could interfere with the Theia3D operation. Additionally , ensure that your GPU drivers are updated to the latest version available from the official NVIDIA website.

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Videos fail to organize

Explanation

Video names contain accented characters or unsupported delimiters.

Possible Solutions

Ensure that video names do not contain accents, as these can cause processing errors. Use only standard alphanumeric characters. Acceptable delimiters include:

• Space ( )

• Hyphen ( - )

• Underscore ( _ )

• Period ( . )

Avoid using characters such as comma ( , ) or semicolon ( ; ). Rename files accordingly before organizing.