Flash limits

I know that there is a limit to the number of movie clip instances you can have in a movie, but I’m sure its not 26. I have 37 instances of a movie clip in my movie and they all have gifs in them. I’m getting strange results with 37, but as soon as I eliminate 11 of them, it works fine. I have checked all other possibilities and there’s no scripting of naming errors. Does anyone know if there is a limit to the number of gifs or other graphics you can have in a movie?