Activity Stream for Jomsocial is not working right

After switching from JomComment to JComments I switched the comment integration from Crosswords and GPS Tools to JComment. The activity stream of Jomsocial is working but only the following is displayed for both systems:

"test added a new comment on the...." - the title of the crossword or the gps track is completely missing. Do you have any idea to support me?

Where do I have to translate the activity stream?

Thanks a lot!

Horst