Having a very difficult time upgrading evoq. Going from 7.2 to 7.3.4, per the recommended path. I unchecked the option to use email as username, as recommended. I get stuck on 50% and it just hangs there on this error:

50% ERROR occured - {0}: An item with the same key has already been added.

Any thoughts on what I should try?

There are NO ERRORS in the install log.