Hi imh_brad !
Hmm, no I haven’t been able yet to address the issue, as I’m on professional duty today and tomorrow in Holland.
I can’t answer your first question (by the way did you mean the error_log of wampserver? or is there and error_log in the wordpress folder?)
To your second question: yes I know phpmyadmin (and SQL by the way), and I checkes both the users and usermeta table : it seems that wordpress installation record any user in there!
Maybe I could do it “manually” but, when I tried to insert a record in user table, I did not know what to put in “key activation” field and “status” field.