Testing Visual Studio 2008 Package

I'm developing a Visual Studio Integration Package. When I try to run the Unit Tests that are included in the unit test project that is included in the template I get the following failure on the first test:

The test adapter 'VsIdeHostAdapter' threw an exception while running test 'MenuItemCallback'. Call was rejected by callee. (Exception from HRESULT: 0x80010001 (RPC_E_CALL_REJECTED))

It's intermittent- a new instance of Visual Studio always spins up, then sometimes it works but usually fails.

Turns out this is a known issue- the built-in tests have some problems.