Unleashed with Content Filtering--Youtube blocked!

[PegLeg]

Hello,

I have 2 R550 APs and valid URL content filtering licenses.  The filtering is active with "Streaming Media" unchecked, which should allow streaming websites such as Youtube to load.  However, I keep getting "Video Unavailable" on Youtube because of the Content Filtering (I know this because as soon as I disable the Content Filtering, the videos load just fine).  I've also added *.youtube.com and *.googlevideo.com to the Allow List, but no success.

What am I doing wrong?  Any help is appreciated!