Hello all,
Recently I ran into this error after upgrading to 2021.2.1.35394 while connecting to Microsoft Access database tables. Designer would read 2-3 tables but any more and I would get the error. I could look at 3 or 4 inputs and they would be fine but if I checked anymore and I would get an unexpected shut down of designer. Long story short, after much trouble shooting the Microsoft Database Engine driver had become corrupt. So if you are getting this error a helpful first step is to repair the engine (download here: Download Microsoft Access Database Engine 2016 Redistributable from Official Microsoft Download Cent...). I do not know if it was the upgrade or some windows or other software update, but that fixed the issue. I hope this helps.
Thank you for sharing @CMSteward!