Has anyone experienced this? Is there anything that can be done? Is there anyway to avoid it? I have committed completely to running my design business with sketchup and have spent many many hours on the learning curve. But, seriously, If I were drafting by hand this would be that same as someone randomly coming by and setting my drawings on fire. Any advice would be greatly appreciated.

Working on a set of construction docs, trying to make a deadline. Sketchup 2014 crashes. When I try to open a backup or autosave file it says some pages may be missing and to revert to recent auto saved files. The best I can get is one page out of seven!!!! Please tell me this isn't happening.