Nope, they are all RGB, that’s the first thing I had the producer check in PS when I was notified of the problem.
They are high-resolution images however. What I am thinking is happening is FCP is decompressing each PNG file and because they are large it takes a few seconds, and because he is arrowing through them so quickly, FCP decides it’s too much and just dies. Would this be a valid thought? I am going to find out where they are located on our XSAN and try it out on my test machine to see if I can reproduce the results.