Publishing Problem

I'm trying to publish a finished project. I input all of my desired preferences and then click Publish. However, the publish window with the progress bar only shows for a couple seconds and then disappears. I am left with the original publishing preferences window in its place and an incomplete output folder.

I've tried a multitude of things to troubleshoot, but nothing has worked. Even stranger is that this error only happens sometimes, not all the time.

My publish setting are as follows:

- LMS

- Title: Trade Finance & Letters of Credit

- Including HTML5 output

- Player: Storyline

- Quality: Custom (max video and image qualities)

- Tracking: Results slide

- LMS: SCORM 1.2

Any help or tricks much appreciated!