Immediately after you see the bug, there may be precious, precious clues in the output log. Here's where to see that:

Windows

• Right click on Glittermitten Grove in your Steam library.
  
• Go to the Local Files tab.
  
• Click Browse Local Files.
  
• Go into gmg_Data.
  
• Get the output_log.txt file and attach it to your bug report.

Mac

• Open Finder and click "Go" in the menu
  
• Click "Library" in the Go menu (You may need to hold the Alt button to make the Library option visible)
  
• Find the file called "Player.log" under Logs/Unity/Player.log

Linux

• Open up
  ~/.config/unity3d/Mostly Tigerproof/Glittermitten Grove/Player.log

If there's a particular save file that's busted, please e-mail the save to support@mostlytigerproof.com. Here's where to look for your saves:

Windows

Mac

Linux