I have been viewing the 2008 SLDDRW files just fine. When I try and view the 2009 SLDDRW files they don't open. Any ideas? I have loaded and re-loaded the free soft ware. I have rebooted my computer and trashed all software and started all over, to see if that worked. Nope! The 2008 files still open and work fine. Not the 2009 files though!