Using EDTFTPjPro version 5.0.1 - when putting a large multi-GB file, we sometimes get "Permssion Denied" exception at just below the one GB level of bytes arrived at the server. It's always about the same, but never the exact same number of bytes arrived at server. I attempted to re-create using a slightly modified version of one of the sample programs, but it would not kick (this was done from my desktop) - the actual process is done server to server. Due to the volume of traffic, not feasible to turn on logging in Production. Any ideas as to what could be going on? As I said - this is a sometime thing. We can always start the put, but it gets that exception thrown.