When using BOTH Excel 2011 & -16, I've experienced crashes when running macros that read and write cells on the same or different spreadsheets.
Things go right, that is successful executions, and then problems can start. Also similar problems seem to be induced when deleting Immediate Window data while in the debug mode. Again only sometimes, but once things go south, mending occurs only after 1-or 2 computer restarts.
It's like some sort of buffer fills up and then overflows overwriting VBA or the VBA spreadsheet code.

Anyone else having this issue? Any ideas?