the cineon install backs up and replaces fm. Either backup fm or do this after the install
cp /usr/sbin/OLDfm /usr/sbin/fm (or even better "/usr/cineon/etc/install/install_desktop remove")
Installing the Tiffen software also breaks cineon
if you are having issues after installing the Tiffen package, aka this message:
Error: Cineon: Can't Open Display
Program aborting in KaMemory::new() due to request for 28 bytes of dynamic memory.
Terminated on signal 6 (core dumped)
either delete or rename the tiffen folder:
cd /usr/local
mv tiffen tiffenOLD