Seen this happena bunch of times at the mozilla vision event - it really sucks. all the tools break except scroll (which is the default, so i think what's happening is that the ability to switch tools has become disabled.)
Reloading or even editing another level and returning to the afflicted one doesn't fix the problem -- it seems you have to abandon the level. At least that means it's easily reproducible!
Seen this happena bunch of times at the mozilla vision event - it really sucks. all the tools break except scroll (which is the default, so i think what's happening is that the ability to switch tools has become disabled.)
Reloading or even editing another level and returning to the afflicted one doesn't fix the problem -- it seems you have to abandon the level. At least that means it's easily reproducible!