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hello everybody..i made a short animation where an emitter change its colour between frame 0-120 (begins white, then changes to light red and finally to yellow) in the preview i can see, in the material rollout how it changes when i press Play botton..but when i press render botton in order to get the singles frames rendered, appears it (and the emitter colour doesnt change), anyone knows what it happenes, and whats the meaning of this messenger??:

thanks all

mane162