I just installed 'Visual C# 2008 Express Edition' and 'Visual Web Developer 2008 Express Edition' on my Vista machine. Previously I have been running these in Win XP. When launching the software, starting a new project and trying to build it I get warnings like "The referenced component 'System' could not be found."; one row for each namespace used. I have .NET Framework 3.5 installed and are able to browse through the tabs in 'Add reference', but I cannot make it work. (A re-install did not help.) Is there an easy fix?