Test site is a fresh 1.5.22 joomla install
Only component installed is DTR 2.7.0e
Here are the bugs I've found so far :
1) There are bugs with selection limits and conditionnal fields (see explanation enclosed)
2) "Joomla User Auto-Creation" feature does not work
3) "Duplicate Registration Prevention" feature does not work
4) User Panel malfunction : Now users can edit or cancel their registration without any bug BUT each time they do, it creates a new record in the back-end (so if a user edits 4 times his profile, I get 4 times the same person in the records tab)
5) Internet Explorer 7 users can't enter any "username" as the check field system always shows "Username already exists."