I am trying to make a scene that involves guns and muzzle flashes. I finished, but every time i try to render it, the single frame with the muzzleflash is cut out. I am saving it on an AVI file but I don't know what is going on. PLEASE HELP!
We need to know a lot more if we're going to help you. Please provide answers to the questions listed here: "FAQ: What information should I provide when asking a question on this forum?"
I don't know what is going on.
Neitehr do we. You are not providing any useful information. We do not even know what version of AE much less anything about your comp, render settings, system specs and whatnot.
The other two gents are correct. More info needed. Look at the link Todd provides.
I'd add a screen shot to that list if it's not there already: if you're brand new to AE and trying to use it intuitively, you may have things totally screwed up and no way to communicate it.
And if you're brand new to AE, you really need to look at this stuff.