Why won't my video clips open?
As of about 2 weeks ago video clips emailed to me won't open, especially Utube clips but also clips on CNN,com,etc. The same urls in the same emails open and run perfectly on my wife's MacBook Air. so it must not be the sender or email but my Mac specifically. I don't recall blocking anything or changing preferences. All suggestions are welcomed. Thanks. (PS, I logged in to Utube which didn't help.)
iMac, OS X Yosemite (10.10.2)