Undefined error in editor or editor

Question

So ... I spent the whole day trying to get vs to work !!

Whenever I try to create a new project or save any file, I get an error message explaining that I will find the details in

C:\Users\<User>\AppData\Roaming\Microsoft\VisualStudio\12.0\ActivityLog.xml

And here is what I got there:

I am using vs community edition and I have tried the following:

• Repairing a visual studio ... [no luck]
• Uninstall the community version and install Express Edition .... [no luck]
• Delete the express, and then install the community publication again .... [no luck]

And the error persists in all of the above attempts ....

Any idea would be greatly appreciated.

Update:

when i try to save the file i got the following error in this xml file:

The color "Popup" in the category "de7b1121-99a4-4708-aedf-15f40c9b332f" does not exist.