Facebook extension not working
I'm using OS 10.10.2 and Safari 8.0.3 with Safari's built in Extension to post to Facebook, Air Drop, etc. For months now, whenever I want to post a webpage link to Facebook, the extension opens as expected. Whenever I click on the Post button, the link quits, nothing works and I have to shut down Safari. What the ****? Anyone else having this problem. For the record, i wipes my hard drive clean and downloaded 10.10.2 several times and the same thing happens. I have no other extensions in use. I have run all the virus software everyone else says to use and I am clean.
iMac, OS X Yosemite (10.10)