you can try this on command line (as root):
dpkg --configure --pending

Maybe there are leavings from catorise which disturb installation of catoriseplus (shouldn't happen but who knows ...). check if catorise is still marked as installed by typing
dpkg -l | grep catorise
(this is a pipe sign in the middle)
you should see some lines with catoriseplus and maybe catorise. catorise should start with 'rc' if listed at all. If it's marked with 'ii' or sthg else you should uninstall both packages manually by typing
dpkg -r catorise catoriseplus
Afterwards (a reboot would be good at this point) you can install it again, either on commandline or using fapman.