Other Issues
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Theia Axiom - v2025
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If the calibration file is not visible when using the button or the tool and the calibration file is an XCP file exported by Vicon Nexus, the file browser window may be filtering for TXT files only.
Use the dropdown file filter selector in the file browser window to allow XCP files to be shown.
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.
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.
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.
To reduce the GPU RAM requirements, try reducing the number or resolution of the monitors connected to the GPU.