The folder path '.' contains an invalid character

Question

Using VS.NET installer: when I create a package (even with a basically empty assembly; just one form with a [close] button on it) then the installation always results in the following error mesage: The folder path '.' contains an invalid character. and in the event log: MsiInstaller: Error 1324. The Fodler path '.' contains an invalid character. Googeling and Technetting the problem, all I find is articles talling me that I (the installer of teh package) have an invalid charcter in my profile path. However, this package will do the same on any machine and with any profile being used. Anybody...?