Windows App Published with Visual Studio 2005 comes up blank

I published my C# application using Visual Studio 2005 to a server. I then ran the setup to install the app on my computer ... no problem, app runs fine. Then, I had another analyst in the office do the same to their computer ... again, no problem and app runs fine. The manager tried it to his computer and although the install seemd to go fine, there is a problem, app does not appear.

When he starts the application, nothing appears on the screen. The app appears in the task manager and is running but it is no where to be found on the screen nor when Shift-Tab are pressed.

Am I missing something? This reminds me of imaging a computer and then applying it to other computers during a deployment. The computer environment has to be similar (exact) or there will be problems. Does something similar happen when trying to deploy a published app to various machines (enviroments).

BTW, the app works fine on the manager's computer if the source is run from within Visual Studio using Start Without Debugging.

This is perplexing and any advise will be much appreciated.