error inserting module - invalid argument

Hi all, I have a problem regarding inserting a module. I have the driver rpm with me in which I insert the module & accomplish other requirements of my driver. When I say rpm -ivh tifm-1.3-1.i586.rpm This is working fine on my system i.e on Suse 9.1 ( 2.6.5-7.71 kernel). But, the client has a problem even when he works on a system with the same configuration i.e. Suse 9.1 ( 2.6.5-7.71 kernel) He got the following error message :- Error inserting tifm (/lib/modules/2.6.5-7.71-default/kernel/drivers/block/tifm.ko): Invalid argument. His system hangs after then. What might be the reason behind it. Regards, Seenu.