Custom driver Fedora Core 2: -1 Invalid module format

[Intel_C_Intel]

I successfully rebuilt the driver with the install script for VDK, but when insmod-vtune is run, there is the error "/opt/intel/vtune/vdk/vtune_drv-x32-2.6.5-1.358customsmp.ko: Invalid module format". Does someone know what may be the cause?

Thanks.