[chora] cvsps doesn't do anything

[Michael Cramer]

when creating patchsets with chora nothing shows up, only this message in my 
apache2 error_log file

cvs_direct: bad response to valid-requests command
WARNING: malformed CVS version: no data
WARNING: malformed CVS version str: (UNKNOWN CLIENT)
WARNING: Your CVS client version:
[(UNKNOWN CLIENT)]
and/or server version:
[(UNKNOWN SERVER)]
are too old to properly support the rlog command.
This command was introduced in 1.11.1.  Cvsps
will use log instead, but PatchSet numbering
may become unstable due to pruned empty
directories.

cvs log: No CVSROOT specified!  Please use the `-d' option
cvs [log aborted]: or set the CVSROOT environment variable.

versions are:
horde 3.0.5
chora 2.0
cvsps 2.1

any hint for solving this? all other functions work in chora, only this one 
won't