Flash cs6: blue boxes around my drawings?

I'm not quite sure if my problem was the same as yours but for mine, blue boxes would appear around each of my strokes. I figured out that that indicated that each stroke was like its own separate object, and it was merely outlining my objects. To fix this, you should first select one of your frames, then right click on the drawing and select "Break Apart". That should get rid of the blue boxes, but unfortunately that only works for that frame of that layer, so you'd have to do it with every single frame that has the problem. Something else that works (but doesn't solve the other problems that came with my issue, which was solved by the previous method I mentioned) is to go to View --> Hide Edges. This will remove the blue boxes, but not other problems (like the fill tool not working unless I make a completely closed shape in one stroke). I hope this helps!