How to fix error message: "Error upgrading YMJ. The upgrade package was not signed"?

Question

New Dell 1501 came with Yahoo Music Jukebox. When program opens window pops up to upgrade; only 2 choices -upgrade or exit jukebox. Select upgrade, manage to get to about 3900kb of the 12652kb, receive warning window with following message: "Error upgrading YMJ. The upgrade package was not signed". Once OK is clicked in warning window, entire program shuts down.

Answer 1

I suspect you are running Vista.  You might want to enable UAC (user account control) if disabled.  Vista doesn't have add/remove programs.  I believe you goto programs and select Yahoo Music Jukebox and uninstall.  Go to site downloads.yahoo.com and install YMJ (in other words bypass the Yahoo upgrade and do it yourself).