EUREAKA!and that would be one reason I wanted you to create a NEW user profile
Found out it was a missing ADTStockTools.atc file from the enu\Support\Register Tools\ folder under the profile. Not sure how this file gets generated but without it the "Stock" tools don't work.... Copied over one from another system and bodabing, FIXED!
Define "New User Profile"... After each install I deleted the AutoCAD profile folder and cleared out the Local User Registry settings. By doing this AutoCAD has to recreate these setting from it's new user cache.... Not sure what else could be done.
I'm attempting to parse why one would delete those contents after install? As part of a 'clean' install I understand, as a matter of course not much. Was the missing file present in the new user cache prior to your copy operation(s)?