Bill,
When looking at the debug output on page 2, I see the following lines:
[2013-06-12 00:36:02] [DEBUG] YouTube Video Provider: Reported total result count is 165 video(s)
[2013-06-12 00:36:02] [DEBUG] YouTube Video Provider: Now attempting to build 20 video(s) from raw feed
[2013-06-12 00:36:02] [DEBUG] YouTube Video Provider: Skipping video at index 9
[2013-06-12 00:36:02] [DEBUG] YouTube Video Provider: Skipping video at index 16
[2013-06-12 00:36:02] [DEBUG] YouTube Video Provider: Built 18 video(s) from raw feed
As you can see, Tubepress is skipping video's 9 and 16.
This is normally caused because a video is restricted by the person, or company, that uploaded it to a certain geographic area. (Usually country or continent) So the location of your server is not able to access the videos because of these restrictions.
One thing you can try is to contact the 'owner' of the video's in your favorite list that are not showing up and ask them to remove the location restrictions.
Let us know!
Thanks!