Hi people!

It's my first post here, and I first would like to thank for the help and support provided by this forum.

Here's my problem:

I have two paint effects trees customized (parameters were tweaked) with flow animation and a camera that's animated like a turntable. As it is, there's moments that the big tree is in front of the little tree and vice-versa.
At this moment (picture at the left) the stamps that produce the leaves seems to have an Alpha problem, creating darkened areas where they should be completely transparent.

I'm using Maya 2008 with Maya Software render engine, and all shadows on all strokes are set to none as well as "Cast Shadows" turned off both on the lights and on the strokes.

One additional information: when the little tree ends up growing (flow animation reaches 100%), the camera shows it again in front of the big one, and there's no alpha problem. Maybe the problem is somehow related to the the flow animation before it reaches 100%?

Thanks in advance!