Asalam Alaikum Friends, meine sony vegas software download kia tha version 12 jis ko open karte waqt ek error aata hai wo ye hai, "sony vegas pro 12.0.exe is not valid win32 application"

Or phr meine is ka chota version download kia 11.0 us mein b ye he error aa raha hai .. please tell me what is the problem with it..