I had the same thing happen to me. Played the mission once with no problems, other than me getting shot to hell. When I tried to restart the mission it would not load. Tried restarting FSO and the computer, but it still wouldn't load. I removed FSPort and the VP's and tried to download via the installer, but it just skipped over them like it was still installed. Ended up downloading manually and now it works fine. Just finished FSport yesterday with no other problems. I also have the audio issues. Speech during briefings works about 70% of the time. Once in a while it will drop in game message audio. Same deal with sound effects, ie firing primaries, explosions etc. During cutscenes the audio is sometimes out of sync with the video. Doesn't effect game play and I just assumed it was because I am using the on board sound, so it's not a big deal. besides, with all the awesome stuff that is FSO, one little issue doesn't bother me.