I apologize to everyone for the recent delay on updating YouTube5 after changes made by YouTube broke it last Wednesday. I learned of the issue late Wednesday night, but was unable to fix it before I left Thursday to be out of town for several days without a computer. I’m back now however, and thanks to a fix submitted by vinnyrose, YouTube5 is fully functional again! Please let me know if there are any issues with the new version.
Update: It looks like I spoke too soon. The original fix broke support for embedded videos; I have now released version 2.2.7 which should get everything working again.