"The Dependencies for the Object Cannot Be Determined" - VS 2005 Deployment Projects
There seems to be a bug in VS2005 that, when you either a.) increment a version number, b.) do a major change, or c.) sneeze on your keyboard, that makes setup projects break. It is not all that uncommon of a problem, as you can see here: http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=151159&SiteID=1
The solution, apparently (at least it worked for me) - is to simply remove the deployment project, then add it back in. You do not have to modify anything in either your source or deployment projects - just adding the deployment project back in seems to clean up the file such that it can find the dependencies again.
Hopefully, this issue will be fixed in a future SP of VS2005 (if it hasn't been already). UPDATE: It has - the so if you have this issue, upgrade to SP1.