Here's a comment I accidentally posted on a different thread earlier with a .dmp attachment:
I found what may have been the problem. I have a spread that I use to manage all my vectors (logos and symbols), some of which I turned into symbols in the designer persona so I could make global changes to colors if needed after using multiple instances of those symbols in the document. I tried copying the contents of the entire spread from this document to a new clean spread and the program immediately crashes. So I switched to designer persona and opened the symbols panel and deleted the most recently created symbols. The vectors are still in my document, but the most recent symbols are no longer in the symbols panel. After deleting the 3 most recent symbols I was able to save the document. Seems that the problem started after importing the table, even though the file was already saved after creating and modifying the symbols, so I'm not sure what happened since then that caused the program to crash. The symbols that caused the problem are 3 round green vectors.
Unfortunately, I'm still seeing random occasional crashes, possibly during autosaves, but I am able to save my document now.
Attached my latest report
4713aef3-127b-4af9-be0f-41619cdce7d6.dmp