MORE INFORMATION
These are some steps you could try to remedy this behaviour:
1. Conflicting kits or corrupt preferences
Please verify if these issues occur in “Safe mode”. Safe mode is used for debugging purposes and can help determine if problems you encounter are caused by user customisations, 3rd party plug-ins or kits, or if they occur with your core Modo install. For more information on safe mode, please check the following support article: Q100288: Launching Modo in safe mode.
If this problem no longer occurs whilst running Modo in safe mode, you should be able to resolve this problem in standard Modo by reverting to its core install state. This can be done by performing the steps in the following support article: Q100035: How to revert to Vanilla modo.
2. Graphics driver problems
Try updating your graphics card drivers to the latest release. If updating the drivers caused the GL/UI issue, try reverting back to an earlier one and let us know the offending driver version.
3. VBO Mode incompatibility
Please try turning VBO (Vertex Buffer Object) off. This setting is set to Automatic (On) by default, meaning Modo will automatically decide if VBOs should be used, but will disable it on hardware known to have stability issues. To troubleshoot instability issues, it is recommended to manually set the VBO Mode to Off.
Please note that disabling VBO Mode will cause the Advanced Viewport to not function correctly but the Default Viewport should remain functional.
Within Modo:
- Navigate to Preferences (System > Preferences or Modo > Preferences)
- Switch to the OpenGL tab
- Set VBO Mode to Off
- Restart Modo and the change should take effect.
Image 1: A Screenshot of the Preferences window showing where the VBO Mode is located.
FURTHER HELP
If you continue to encounter this problem while in safe mode, please open a Support ticket and let us know the issue that you are encountering and the troubleshooting steps you have taken so far.
For more information on how to open a Support ticket, please refer to our article: Q100064: How to raise a support ticket
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SUMMARY
In certain instances, Modo may no longer work as expected. For example it could become unstable and you may encounter crashes, or you could have display problems with the UI or glitches in the GL viewport.