Very similar issue as this post.
None of the suggested fixes in that post worked for me, which is why I'm posting separately. Specs: running on Windows 10 Pro, InDesign 2021. Issue first encountered on a different device (surface pro), then seemed to persist across devices. Tried the following:
At the moment, it is occasionally able to save, and, when it inevitably crashes (and I "don't save"), I have a chance of getting a recovered file on accessing version #4. This is not a sustainable solution.
Screenshots correspond to the first error message, then a second one that appears when I try to do any operation (e.g. scrolling, moving object) a few seconds after dismissal of the first message.
File>Export and choose IDML
Open the IDML and resave it to a different file name (not over the old one)
Does the problem persist?
If so - Send the document to adobe via email at email@example.com
Thank you for your help! It wasn't working the last time I tried it, but today, for some reason, it worked. Not sure what I did differently. And I'll keep the email on hand in case something goes awry with this latest copy of the file.
Thank you for your assistance!
I've been seeing this issue pop up again. Any file I open or start in ID seems to now be likely to see the message saying that the file is corrupt. I'm not sure exporting and re-opening via IDML is a sustainable workaround. Do you have any follow-up advice?
Ok. Seems to have gone crazy.
One thing i would try if you can is setup a new user login and see if that resolves. This is just a troubleshooting step to see if it is something at user profile level or an actual InDesign error.
IF that's a no go then try Creative Cloud Cleaner Tool.