Visual studio does not show content of files

I had this precise bug. I would open files from the solution explorer but the editor window would either not appear, only 1-2 lines of 100+ line files would display, or the file would display but I could not scroll or otherwise edit the file. Some parts of VS were working, i.e. little tooltips would appear if I moused over the right part of the (invisible) text but I obviously couldn't do much in this state.

I have a lot of VS stuff installed so I thought it was some sort of plugin or extension that was causing things to go screwy. These installed items include:

• Visual Studio 2010 10.0.30319.1
• ReSharper 5.1.3000.12 (JetBrains)
• DevExpress DXCore 10.1.5 (free community edition)
• DX Source Outliner (reason for DXCore, from sbohlen)
• Tabs Studio 2.0.6 (www.tabsstudio.com)
• Productivity Power Tools 10.0.11019.3 (Microsoft)
• Snippet Designer 1.3.0 (Matt Manela)

I solved it (2/18/2011) by Tools... Extension Manager... disabling the Productivity Power Tools and Snippet Designer. No idea what was going on but this fixed it for me and I was back to work. Probably something in the system drawing and/or display options.

EDIT

The issue continues. Unfortunately it is intermittent and I have not be able to reproduce it reliably. Now the suspects are the BugShooting and CaptureWiz screen capture tools. I've had the behavior show up and then disappear in and around the time of logging bugs with them.

2nd EDIT

The issue continually continues. I have not yet been able to determine the cause but usually quitting VS and restarting resolves the issue(s). Other parts of the behavior includes the menu options (File, Edit, View, etc.) not operating properly as they show only the highlight but not the actual menu items. The solution will build and run just fine, but things still won't show up properly.

I had a similar issue whereby VS2012 was telling me that I had active (open) files, but the text editor was not displaying them. Clicking on the file(s) in the solution explorer seemingly did nothing. Alt + Tab just cycled through the open files, but still, nothing rendered on screen.

I solved it by clicking on the "WINDOW" menu item and then"Close All Documents". Visual Studio then behaved as expected and opened (and rendered) the files correctly.