VB Managed Data Request Sample Error

[matt]

When I try to run the VB sample, I get the following errors:

Error 1 Class 'CLSID_CorSymWriter' could not be created: Class not registered

Error 2 Unable to write to output file 'F:\Microsoft Games\Microsoft Flight Simulator X SDK\SDK\Core Utilities Kit\SimConnect SDK\Samples\Managed VB Data Request\Managed VB Data Request\obj\Release\BasicExample.pdb': Class not registered

Any idea what the problem is?

Thanks