ahh I see. I think it's sort of silly if a program has trouble reading 3 padded images to tell you the truth, but oh well. lol. I can't imagine why it would become a problem if your animation is above 100 frames either though, but I'll take your word for it. I know over 999 frames is a problem because then you would be forced to pad with 4. I suppose it is a good safety precaution no matter what though and doesn't really cause any problems if you do.