It’s good to hear that you’ve found that the file upload works in Chrome. What is your host platform? if it is Mac something that may cause IE to croak while uploading a file is the setting to automatically uncompress gzipped files. We have seen the bit with the vidoes freezing at about two minutes in, we weren’t aware yet that the problem was only seen in Chrome. I’ll add that bit of information to the bug I logged about the video issue. A work around that some folks have done for the freezing videos is to extract the videos from the Sandbox to their desktop (instruction for this can be found in other threads in this forum).