So, I decided "Hey, I'm gonna try my hand at map-making, now that the custom game system seems improved".

Well, I haven't used it since before the update. I got in, couldn't see any terrain, remembered I disabled the terrain from vision so I could take a screenshot before, and pressed shift+T hoping that was the right key combo to re-reveal terrain. Well, I crashed. Star it back up, I crash again, and again. So now I can't get on. Anyone know how I can fix it?

Here's the ErrorReporter thing I get, if it can somehow help: ErrorReporter

Update: Found 3 potential solutions.
Delete the Blizzard Entertainment stuff in the registry
Nope, made the editor revert to its default UI settings, but crashes anyways
Run the Blizzard Repairer
Nope
Delete 'EditorVariables.txt' in 'Documents/StarCraft II/'
Success. Thanks for the help, guys!

In the editor variables there might be an entry called "forceStoryMode=1" that could have caused that.
People have no idea how the entry got there. Seems like a bug during patching because that seems only happen after some patches.
That already happened during beta with patch 15 says google.