While I didn't even bother to check what the link posted was, as I am in a hurry, did you run fix permissions after moving it the /system/app?
If I have helped you or if you like my work, Donations
are always appreciated!
Galaxy Nexus (GSM) - EuroSkank Nightly Build with Trinity Kernel
Nexus One - Retired and sold
G1 - Retired and collecting dust in its box
Nook Tablet Rooted
CM9 Internal/CM7 SD