I'm running Visual Studio 2012 Express for Desktop, update 1. I'm developing a WPF application. The xaml designer seems to crash frequently. I get a dialog pop up that simply says "Message" in the title. It has a red X icon but no other text is displayed. There is a button to dismiss the dialog but even the button has no text on it. I will attach a screenshot. When I look in Process Explorer this dialog is the process XDesProc.exe, spawned by WDExpress.exe.
I also frequently get a message in the xaml designer window itself saying the process has crashed with a link to restart it.
Finally, on a fairly frequent basis, all of Visual Studio will crash and need to be restarted.