There is something wrong with your package:

dpkg --contents callerxui_0.0.4_armel.deb
drwxr-xr-x root/root 0 2011-08-25 22:45 ./
drwxr-xr-x root/root 0 2011-08-25 22:45 ./usr/
drwxr-xr-x root/root 0 2011-08-25 22:45 ./usr/share/
drwxr-xr-x root/root 0 2011-08-25 22:45 ./usr/share/doc/
drwxr-xr-x root/root 0 2011-08-25 22:45 ./usr/share/doc/callerxui/
-rw-r--r-- root/root 151 2011-08-25 22:40 ./usr/share/doc/callerxui/changelog.gz
-rw-r--r-- root/root 1371 2011-08-12 15:56 ./usr/share/doc/callerxui/copyright

check your debian/rules file (especially the install target)

Nicolai