Visual Studio 20120 Setup Project: Unable to update the dependencies of the project

So this happens to me every now and again.

Here's are some workarounds I've used:

1. Simply shutdown Visual Studio 2010, restart and rebuild.  This seems to fix the problem most times.
2. If option #1 doesn't work, do the following:
1. Remove the offending project(s) from the solution
2. Go to the folder where the project lives and delete everything except the project itself.
3. Re-add the project to the solution
4. Rebuild.