I've had the same error quite frequently over the last month or two. I'm using Revit 2015. From what I understand, it's a graphics card issue, not a content issue. I unchecked the "Use Hardware Acceleration" box in Options>Graphics, and yet it happened again. I tried turning off ClearType fonts (I think that may be the equivalent in Windows 7 of font smoothing, which was mentioned in another response on this thread). We'll see if that works.
I've also noticed it almost always happens within the first few minutes I open the program in the morning, and I don't think I've ever experienced it after the first hour or so. When it happens, I close and restart Revit, and then it's fine. I've never had it happen after restarting the program. I'm not sure why.