Hey so I just updated Ubuntu today from 12.10 to 13.04. The problem being is I immediately notices that my wireless card had stopped working. When I opened ndiswrapper nothing had changed but when I tried to reinstall the driver I get an error stating FATAL ERROR: cannot insert 'ndiswrapper': exec format error. I use a WNA3100 wireless adapter and I had it working perfectly before the update. I did have to resolve the original ndiswrapper not found error but that was easy. I've scowered the internet and have found no source that in plain terms states how to fix this problem. I'm still new to ubuntu so if it involves the terminal please post the solution command for command if you can please.