I sold my Quad last year, and the new owner is having a little issue with Pages on it now. I'd love to be able to help them, but it seems like a software issue which I'm not too helpful on. History: Graphics card has been replaced, the old 6600 had leaking caps, replaced with another 6600. Prior to video card replacement, and after, these are the problems: "iWork 9.0.5 (Pages, Numbers, Keynote) stopped working properly. The programs open fine, my data is in the document, BUT, I cannot see it. It will show under print preview, but the data is not visible on the monitor. I opened Console, and get the messages: Pages  invalid context Pages  invalid pixel format I have tried the following: Deleted the preferences (for all three programs) Updated iWork to the latest version per 10.5.8 Re-installed iWork Turned off all of my local fonts Nothing worked ... Also, If I drag the lower right corner of pages, back and forth, It gets all weird ... leaves lines, etc behind." No problems whatsoever in any other applications. To start I recommended to repair disk permissions, but that's a long shot at best. Any ideas, ladies and gentlemen? Thanks!