I've just installed Visual Studio 2008 RTM and opened the project I was working on in Visual Studio 2008 Beta 2 a few hours ago and what happens?
Of course there are changes in the framework between beta 2 and RTM - but I hate changes in designer generated files. The same thing happened when I moved from beta 1 to beta 2
I think I'll wait till tomorrow trying to figure out what it is Visual Studio 2008 is trying to tell me
Update:
The fix was just to remove the encoding attibute in the XML document description:
<?xml version="1.0" encoding="utf-16"?>