Yawn

Here it is, 11:57 PM, and I'm logged in to my work computer trying to get something to build so I can check it into source control and go to bed.

Naturally, Visual Studio is driving me nuts! It's insisting that Constants contains no definition for ServiceID.ContactsGuid, despite the fact that if I right-click on the reference and select Go To Definition, VS will take me to the freakin' definition!!! What the heck?! It obviously knows where the definition is!

Sheesh. And so I'm still awake, and still banging my head against this wall.