Is the user blocked in Joomla or CB? Does it happen with this user only?

No, i can login and all other features works well. I add another User too and i get the same error.

Is it wise, that i give you access to my site? Than you can see/check it directly.

Now i reinstalled the complete jommla 1.5 with cb 1.2 rc2. Now uddeIM works fine.

If i install joomfish 2.0 beta the error "There is no user with this username!" is coming up again.

So,... is joomla 1.5.x + cb 1.2 rc2 + uddeim + JOOMFISH 2.0 beta not compatible??

BugReport: www.joomfish.net/forum/viewtopic.php?f=28&t=1649

I found the Problem!!!!!

I have upgraded JoomFish to 2.0 Beta2, now Fireboard and UddeIM works fine. But you have to disable the JoomFish Basic Router or you get a lot Header Errors.

If you disable JoomFish Basic Router, you would be able to use joomfish. I facing the same problem as you. Any help?