There is some error in oscam-experimental installation script because I see this:
Downloading http://downloads.pli...274-r0_all.ipk.
Configuring oscam-util-list-smargo.
Configuring oscam-experimental.
update-alternatives: removing //usr/bin/oscam-experimental 10 as no more alternatives exist for it
sh: 10: unknown operand
every time when there is update available.