I have Kunena 1.7.1 J 1.7.3 and uddeIM 2.6 (with the extras). Prior to installing Community Builder everything was fine. Clicked on Private Messages and it took me to the uddeIM page exactly as it does on this website.
Since installing CB 1.7 when I click on the Private Messages link it takes me to my CB Profile page. I have installed & enabled the uddeIM plugins for CB.
The Tabs Management in CB shows "_UE_TABINBOX" which is my uddeIM inbox, and it is not possible to edit the name to Inbox or anything else in Tab Management.
I have read all the FAQ and followed the detailed CB installation instructions, and re-installed uddeIM to no avail.
As it stand the only way to send a PM is to go into my inbox and then send it via that.
Which CB do you have? cb 1.7.1?
Why you don't change in Tab Management _UE_TABINBOX in the wished name for exemple
"Inbox"? I made it like this and had no problems with renaming.