common language Runtime Debugging

HI
When I start world wind I get this error message
WorldWind.exe-Common Language Runtime Debugging Services
Application has generated an exception that could not be handled.

Process id=0x8ec(2284),Tread id=(2288).

Click ok to terminate the application.
Click CANCEL to debug the application.

Ok cancel

When I click cancel,

Error message appeared

WorldWind.exe-No debugger found.

Regesterd JIT debugger is not available. An attempt to launch a JIT debugger with the following command resulted in an error code of 0x2(2).please cheack computer settings.

Cordbg.exe !a 0xc40

Click on Retry to have the process wait while attaching a debugger manually.
Click on cancel to abort the JIT debug request.

Retry cancel

When I click on retry (nothing happens)
I don’t know what to do with this
Kindly help me ,
Thanks

[m_k]

Of course you have .net and managed directx installed, right?