I was using 2.0 SDK  for Web App development, I have updated SDK to 2.1 on  20-05-2013 now Web Apps not running in Emulator

Emulator shows error message “<App ID> has closed unexpectedly”.

Native apps working fine.

I have tried uninstalling SDK and deleting SDK Folders few times, but issue still exists.

I have tried few Sample apps and Fresh projects but issue still exists.

OS; Windows 7, 32 bit

Any guess whats happening?

Thanks