Another thing you need to know is that you have a version of that document you are working on in home folder/documents/Motion Documents.
Now Motion saves periodically all the files you are working on. So, the idea is to find the version that works, this would also mean that you have to redo some of the stuff that is missing from the final version.
Good luck and let me know what is happening please. Lets see if we can fix your issue…
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