The new (updated and hopefully stable) distribution of files is located at the bottom of this post.
New in this release:
1) Fixed bug that causes the script to crap out when the downloaded YouTube video is corrupt and/or less than 10kb. The script now detects this issue and tries a series of alternate video URLs until one is found that does work.
2) Some minor updates & refactoring of code
3) Minor bug fixes
I will soon be updating the paid-for version of the app as well, and I will send an updated (free) copy to all those who have already purchased the script. I haven't decided yet how exactly to distribute the new release to past customers. Probably via the email addresses that you guys provided at Tradebit when you purchased the script. I will keep you posted.
As always, please let me know if you have any questions/concerns regarding the above and/or the code.