A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
I don't know if this applies to your problem but hear this out...
I've had the same problems with a fairly straightforward spreadsheet with vba code...
Looked into removing all add-ins, especially active-x ones, nope... Tried rewriting the code, spend hours trying to figure out where I missed out, nope.
I got very frustrated writing code for 10 minutes and then oups, another crash.
I must have saved about 50 different incremental version of my spreadsheet and it was very hard to keep track of the logic of my code under these conditions...
It got to a point where I could 'sense' Excel was about to crash : Quick save ! Naw, too late. Then it hit me ! Turned off AutoSave and bingo ! Never that problem again.
Hope this helps...