About the ribbon/”error parsing xaml file” bug

I think I should look much more often for updates, hotfixes and service packs of my 3D Studio Max...
Even after following my own suggestions about fighting the ribbon bug (read this post) I got the same error again after a long time of silence...
After applying the fix again ("read only" protection had gone?!?) I searched the autodesk website for an 3D Studio Max update and - lo and behold - there seems to be a service pack for that software!

The readme says: "Ribbon -> Customization of Ribbon features are now working as expected."
My problem should be history, I hope!

You can find the SP1 here: Autodesk 3ds Max Design Services & Support

Bugfixing 3D Studio Max Design 2011

#1

Maybe you also got this error before: when starting 3D Studio Max you get an error warning that says "error parsing xaml file: root element missing" or another error message that says something with the new ribbon user interface is wrong. The solution is relatively simple:
go to [USERNAME]\AppData\Local\Autodesk\3dsMaxDesign\2011 - 64bit\enu\UI
(change the username to you username and remove the brackets, 3dsMaxDesign should be changed to 3dsMax if you have the regular version)
and search for a file called "MaxManaged.xaml.backup". Replace the file "MaxManaged.xaml" (which is zero bytes in size) with this file and 3D Studio Max runs as it should! I got this error several times until I checked "read-only" in its file settings. Those problems are now gone!

#2

My 3dsMax ALWAYS showed me an error when closing it. This was very annoying!
All settings did not save and it was just... unnecessary?
This solution also was very easy! (btw. I never thought of this causing an error like that)
uninstall your graphic card's drivers and install new ones! This fixed it.