Yesterday, my xaml intellisense stopped working. I've seen issues similar to this, but not exactly, and none of the fixes I have seen for similar questions seem to apply to mine.
Symptoms.
Yesterday, Intellisense stopped working for XAML. At the same time, the designer fails to load.
The problems appear to be confined to one project. If I open a new project, intellisense works fine.
In the Tools-Options-Text Editor, auto complete is checked for C#. It is unchecked and greyed for XAML.
Intellisense works fine in the C# code.
I am using DevExpress and the wpf extended toolkit from xceed. No other add ins. (No Resharper. That seems to be a common source of grief.)
The problems with intellisense occur on all windows, and in all projects within the solution, not just the ones that include DevExpress references.
I have tried resetting my import and export options, cleaning the solution, and rebuilding the solution, in various combinations.
The solution is very big with lots of projects and files, although no more than a dozen or so XAML windows.
The program runs fine, with everthing appearing just as it ought to run.
I'm using Visual Studio Professional 2012.
I can't think of anything else that might be useful. Any ideas?