Visual Studio 2010 SP1 - Issue with config file location

Struggling with VSTO installation after you installed SP1 for Visual Studio 2010? See this link. Basically you need to change some values the registry setup project. As explained here by one of Microsoft's developers:


You'll need to make the change in your deployment project, not in the .vsto or .manifest files. Specifically, you need to change the string written in the "Manifest" registry value. For example, the walkthrough in this article directs you to set the "Manifest" value to "[TARGETDIR]ExcelAddIn.vsto|vstolocal": http://msdn.microsoft.com/en-us/vsto/ff937654.aspx. To satisfy the new URI scheme requirement for Fast Path loading, you actually need to set the value to "file:///[TARGETDIR]ExcelAddIn.vsto|vstolocal".


This solved my problem...