I'm using v3.4.03. This was an upgrade not too long ago and my current users have no problems posting.
When testing out registration as a new user, I can get to the screen where I type in all my info (such as email, username, password, etc), but when I click "Submit", I get:
Microsoft JET Database Engine error '80040e14'
Number of query values and destination fields are not the same.
Oh, here's my URL to my forum, as far as I know, no-one can register, at least that's my feedback I'm getting, although these are from inexperienced computer users. http://www.jmconsultingllc.com/aspforum