[R58] Collision polygon generation issue

Not sure if this is a actual bug as much as proof that the collision polygon auto-generation feature on sprite image import is not done yet, but importing this picture:

<img src="http://www.thelure.se/C2/Bugs/flag1.png" border="0" />

results in a complex polygon like this:

<img src="http://www.thelure.se/C2/Bugs/flag1result.png" border="0" />

Are complex polygons ok with the collision system?

No, the lines of the polygon should not overlap each other. It's only done that because the polygon guesser doesn't do very well with awkward shapes. You should adjust it so no lines overlap.