Black spot on windows...

Hello every body.

This is my first thread in this great community and its about a new problem for me.

The thing is: I started this project (its in Portuguese) with Blender 2.45 and couldn’t resist to use the new 2.48a . Another thing is that this insect had particles in the mouth area that i erase because of the problems i was getting.

The problem is, wen i render this scene in windows OS it gets a black spot (only in some frames) in the face as you can see:

The curious event: This does not happens in Linux (so its not all bad news):o has u can see:

Does any one know why?..

Thanks in advance and hugs for every one :cool: