Xaml Error and Reset Ribbon
Software: 3DS Max 2011
OS: Windows Vista
During startup of 3DS Max I have run across this error. First a window will appear:

Followed by:

You can click through these error messages and still launch the program, but our ribbons menus will be gone.
The problem is that a file called MaxManaged.xaml has become corrupt for whatever reason.
First close 3DS Max.
You can find the MaxManaged.xaml file in your user, appdata folder, which for me was:
C:\Users\<username>\AppData\Local\Autodesk\3dsmax\2011 - 32bit\enu\UI\
You'll notice that this file has a size of 0KB if it is corrupt. Simply delete it, and make a copy of the backup file MaxManaged.xaml.backup, renamed to MaxManaged.xaml.
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Relaunch 3DS Max and you should be good now. Unfortunately, this problem is likely to occur again, but at least now you have a solution.
