Thanks. Yes, that’s not going to fix the issue. Deleting the plugin does not delete the database. (There are arguments for and against doing so.)
As a side question, did the free version work? Was all the previous data still there?
I will have to scrounge through the source code a bit, see where the overlaps are, then provide you instructions on what to delete. In the process, I may send you a patch with some instrumentation. Right now I’m leaning toward a problem with the custom taxonomies, but I don’t have photographic recall of all the code I’ve written. (Thank God!) It may make sense to Skype and share admin screens at some point if you are up for that.
Stay tuned. Appreciate your help on this.
-Mark