Basically what the header says, which means every rendering I do is putting a black frame at the end of everything, so, for example, doing a Vine loop vid effect is proving impossible, because of the black frame it puts at the end of everything.
Any help please for this novice, would be greatly appreciated, its driving me crazy, hope it/s something simple.
There is nothing wrong. AE operates on genuine time and a discrete frame is sampled at its temporal entry point. and nothing stops you from creating perfect loops, you just need to understand this little thing.