Does this happen with all projects?
A few suggestions before I escalate your issue to support:
- Check system requirements of your computer: System requirements for Adobe Animate CC
- Restore preferences: Re-create preferences
- Clean install of your software: Use the Creative Cloud Cleaner Tool to solve installation problems
If these solutions do not work, send us the log information over a private message: Log Collector Tool
To send a private message, click my picture and use the Message button.