Hello,

I understand you're having trouble opening a new file in Trados Studio due to an unexpected exception. Here's a step-by-step guide to help you resolve this issue:

Step 1: Close Trados Studio.

Step 2: Press the Windows and R keys at the same time. This will open the Run dialog box.

Step 3: In the Run dialog box, enter %temp% and then click on OK. This will open your temporary files folder.

Step 4: Delete all the files and folders in the temporary files folder, if possible.

Step 5: (Optional) You can turn off UAC (User Account Control) by navigating to Control Panel > User Accounts > Change User Account Control Settings, and then set it to No notification.

Step 6: Reset the settings files for Trados Studio. You can do this by navigating to the settings section within the application.

Step 7: Run a repair on Trados Studio. This option is usually available in the Help or About section of the application.

Please note that these steps should help resolve the issue you're facing. However, if the problem persists, it might be a more complex issue that requires further investigation.

Best regards,

RWS Community AI