Trying to figure out...
If your file is AVI, are you using AviSource or DirectShowSource?
Did you record with FRAPS? MeGui LOVES to do this to me when I was trying to do Parasite Eve.
it gives me the last line of the avi files if i cancel both the "+" and the "" at the end of it, or the next one (a blank line), if i cancel only the "+".
So you are saying it looks like this or something?
The right way to do that is this:
In short, the last Avi file shouldn't have a plus at the end.
Oh, and AviSynth doesn't really read blank lines. You can have a AVS file filled with 20 blank lines and it will still work fine.
Also, if you append too many files, there will be no audio (learned that from Valkyrie Profile: Lenneth and Chrono Trigger)