No, I have not tried that. I had tried removing everything related to TT21 in the ~/Library paths though. Interesting!
Looking on the system, I find that ~/Library/Caches/KSCrash/TurboTax is a directory, not a file like you stated, so I removed the directory and the sub-dir contents. And..... It WORKS!! TT21 running as a user level again! Thanks!!
