Yes, this appears all the time.
So much so, I am thinking it wouldn't be a bad idea at all to put (AVI) next to "Video for Windows" in the Output Module's format list
While we're at it, you don't want to use the File > Export path in AE to render most video formats, though. It's really not recommended.
You use the Render Queue instead (Composition > Add to Render Queue).
alright so im rendering and im waiting... IT WORKS!! I love you guys!