Can't change default app version (2008/2011) for opening MS Office files
1. Right-click a DOCX file and select Get Info
2. Change "Opens With" to Word 2008 (Change All button is grayed out at this point)
3. Click lock to unlock the permissions pane and enter password
4. Close Get Info, then reopen Get Info again
5. Make sure Word 2008 is still selected and click Change All button
Once I do that, the Open With entry reverts to Word 2011. This happens for all Office file types. Since I can change to other non-Office apps, I'm assuming that Office itself is somehow protecting against opening with Office 2008 apps by default. Is there any way around this?
MacBook Pro, Mac OS X (10.6.6)