I using VS2008 and got error xml. After that I can’t read web.config (so bad) and go to Option –> Text Editor –> XML –> Formatting got a bad message “an error occurred loading this property page”
And Google’s time…. i searched solution for that. Search with keyword “vs 2008 option xml formatting error”
To fix this issue need to do:
Step 1: Open cmd “Run –> cmd”
Step 2: Go to the path:
– VS2005: “C:\Program Files\Microsoft Visual Studio 8\VC\”
– VS2008: “C:\Program Files\Microsoft Visual Studio 9.0\Common7\IDE\”
Step 3: Typing magic command:
devenv /setup
Step 4: Wait…wait…it take one or two minutes
Step 5: Open VS again and look the nice result.
Welcome to my voice @ Bao Nguyen 
Thank you very much, you helped me solve a similar problem!
Great!! awesome, It worked me too. I had a problem with TFS power tools not loading up and i couldn’t choose the tfs plugin in the tools –> options–> source control, after i did this i was able to select the tfs source control…. Thanks a million. Good work keep it up…
Nice to help you.
Ensure that the cmd promt is running as administrator.
To Do so, go to Start–>All Programs–>Accesssories–> Command Promt, Right Click and select Run as Administrator.
Else it may give following error message:
“The operation could not be completed. The requested operation requires elevation”
power tools can really save you from a lot of headache, specially when the job is very hard *~.
Thank you. Solved for me!!
Nice hear that 🙂