FCPX has no audio when export

Exporting Format: Video and Audio

Video Codec: H.264

Resolution: 1280x720

Color Space: Standard - Rec. 709

Audio File Formate: Quicktime Movie (AAC)

Some additional troubleshooting that I tried since opening this thread: exporting just the audio clip in both wav and AIFF and that didn't work. Tried dragging a new audio source in and re-cutting it to match what I had in the timeline, that didn't work. Tried a copy and paste and do a dual audio in the timeline. That did not work either. I am trying to re-edit the whole project but would still like to know what the heck to do for the future if this happens again. I never had this issue with FCP 7 and now I do with FCPX.

Breakdown:

Deleting Preferences

Adding New Audio

Creating new Project and Copying and Pasting Project

Exporting Audio just as a WAV or AIFF

Exporting Video and Audio in .MP4 or .MOV

Trying different Video Formats of h.264 or ApplePro422

None of that worked. The only thing I could do was restart the whole project again. I tried to see if I could save just the video section of the edited video and paste it into the timeline but that seemed to still corrupt the ability to export the video. As I said before, I never had this issue with FC7 and hope they figure out a fix for this. It has been happening more and more often. Usually its for smaller projects so its not that big of a deal to start over but this time it was a much larger project and was wanting to not have to start from scratch.

Time line and what computer I am running it on are below.

I did the first bit before. I also tried 3 different computers with 3 different accounts. Never heard of etrecheck but will try it out. Thank you.

So it happened yet again. Same issue as last time. Same settings as last time. Same troubleshooting as last time. I think I might really consider going to Adobe in the future. Anyone else still having this issue or have any other ideas?