The most common cause for the "not responding" error in video editing is hardware related.
Unlike other NLEs, EDIUS stores user settings in a hidden folder. Corruption here causes universal crashes.
Sometimes the specific hardware acceleration for a video effect causes the crash. edius is not responding due to unexpected issues
Upon reopening EDIUS, a "Project Recovery" window should appear. If it doesn't:
If the issue persists, your user configuration may be corrupted. You can reset these without reinstalling the entire program: The most common cause for the "not responding"
: Rename the "Grass Valley" folders in both the %appdata% (Roaming) and %programdata% directories. This forces EDIUS to recreate fresh configuration files upon the next launch [23]. Software & Environment Conflicts
If you have tried the above and still appears when opening any project, your installation is compromised. Sometimes the specific hardware acceleration for a video
Common causes mentioned in similar troubleshooting blogs: