"The Module DLL 'C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\isapi\owssvr.dll' could not be loaded due to a configuration problem.The current configuration only supports loading images built for a x86 processor architecture. The data field contains the error number."

This is an interesting problem I spotted the other day when someone messed around with my lovely dev server.

The solution is really simple it is a matter of changing the application pool to x64... how?

go to Start->type InetMgr.exe -> Expand your server ->Application Pools -> Select the application pool you think it could be wrong->Advance Settings... -> Under general, change "Enable 32-Bit Applications" to False. Click ok!