You can see the error message dialog in the screenshots on the testbot result webpage. In this case, you've got missing exports, ConvertSidToSidStringW and RegGetValueW. Some solutions are to make those into function pointers (and skip appropriately if they're missing), use the A versions if they exist, or use a different function that exists on more platforms.
Oh.
Personally, I would ignore failures on operating systems < Vista, since gameux won't be present and the tests would not normally be run.