Solidworks - Application error

Hi,

I have a problem that after installing Solidworks 2009 SP3.0 when ilogin as a normal user i get the following error:

The instruction at "0x7c90100b" referenced memory at "0x00000034".the memory could not be "read".

Please help

Thanks

PS It works if i make a normal user member of the administratorsgroup but we don't want that.SolidworksGeneral