Yo,
I have made my own save editor and thought I would post it. You can't edit as much as with glynn's but you can import/export pictures.
This is the first release and I have only tested this on my machine so there may be problems I don't know. Let me know. This is my first editor.
Please backup your saves. This is the first version and hasn't been tested very much other than by myself to make sure
saves are written in the same way they were loaded and the game doesn't crash on loading them.
You will require a recent version of .NET Framework to run it I think.
Thanks and credit to Dej for info on the save format.
Link:
http://dl.dropbox.com/u/37713648/GrimSavEdv0.02.zip