I was wondering if this was ever actually resolved. I have all the relevant DLC and the correct data path but after several attempts I've never been able to get the editor working, I always get "glasses has stopped working" when trying to enter the sandbox or any other level. Deleting my test level and creating a new one doesn't work.
It's quite frustrating; although I'm just a tinkerer rather than someone who uploads mods, it would be nice to be able to mod the game but so far it's not happening...
Are you using the GOG or Steam version?
