As we reported earlier today, Google is now retiring the older YouTube v2 API which means any apps that used it won't work anymore. The new 22.214.171.124 version of MetroTube now support v3 of the API, as does the new 126.96.36.199 version of myTube. In addition, myTube has added in support for viewing comment reply threads, along with annotations and subtitles.
Thanks to Abhishek for the tips!
Download MetroTube from the Windows Phone Store (99 cents with free trial)
Download myTube from the Windows Phone Store (99 cents with free trial)