When you opened or closed a drawing file, you received a fatal error or an unhandled exception. This issue may also have occurred while you were in the drawing file.
These errors may be caused by the digital signature feature.
To correct this issue
- In Windows Explorer, right click on .exe or .zip file. On the shortcut menu, click Enable/Disable Digital Signature Icons.
- Clear the Validate Digital Signatures and Display Special Icons check box.
- Restart the system.