.Jar Apps - N-Gage

I have an N-gage and am trying to install a ".....(s60).jar" file. I have tried copying across via the USB cable and via Bluetooth, but when i starts to install it comes up with a message - "file corrput!"

Is this because the file is not compatible or do i require an update / new software?

Any ideas??

means the jar file is corrupt, get another version.

place the file in root of mmc, then install from manager. theres a faq in symbians faq on installing stuff via ngage usb cable.