SketchUp bug splats

Splats happen.
SketchUp is set up to automatically back up your work as an .skb file.  You can rename the .skb file to .skp to use the backup to recover a backup of your work.  For large files, the automatic backups may slow you down (saving when you don’t expect it).  But if you turn this off or reduce the frequency, remember to save versions of your work often.  When you SaveAs versions of your work, you can recover anywhere along your process.  It can help you recover at an earlier step in your design process, if go down a design path that doesn’t work out.  How often should you back up automatically or use SaveAs can be answered by how much work you want to lose or how hard it is to duplicate the current process…
Here’s where you can find the Saving settings:
Window ->Preferences ->General

Bug Splats record what happened when SketchUp crashes.  So right when the crash occurs, a window comes up saying “Bug Splat!”  When a Bug Splat happens, it’s a good to describe what was occurring, so SketchUp staff can deduce the problem and work on solutions.  Describe the few operations you were doing, any commands or rubies involved, how you were interacting with the geometry, how frequently it occurs (first time, same model, randomly), the drawing size (file size and roughly how many faces in the .skp), and what OS version you are using.  The more information you can give them, the more Google staff can work on a solution.  They may send a response asking for more information or pass along a solution, so be sure to include your email address.  (Your email is used solely for debugging and testing purposes and not shared beyond Google SketchUp testing.)  Reporting Bug Splats is a good way to improve the software for everyone.
Save early, save often.
Source: Sketchupland