Vault Crashes When Changing State or Category of Any File
Related Product:
Autodesk Vault Professional
Step #1: Close your Vault Client and go to C:\Users\username\AppData*\Roaming\Autodesk\Autodesk Vault Professional 20XX.

*AppData is a hidden folder. Make sure your File Explorer view settings are set to show hidden items.

Step #2: Select all files (CTRL A) in the folder and send/compress to Zip file.

Step #3: Move the Zip file to your desktop
Step #4: Launch the Vault Client and try to Change State or Category. Upon successful change state or category, you may discard the Zip file on your desktop.