I also have this problem on my IMAC - It happens "Every time" there is a new firefox update. All my printer settings get messed up and the "Print Selection Only" is grayed out and can not be used. Usually I do a "Refresh" and it fixes it but with this latest update nothing seems to work! I love using Firefox but This is so very frustrating - Is this every going to be fixed?

Try to reset print prefs on the about:config page.

• https://support.mozilla.org/en-US/kb/how-print-website
• http://kb.mozillazine.org/Problems_printing_web_pages

I uploaded an "add on" which finally seems to have solved my problem "Printed Selected Text" 0.4.3 Legacy by Leszek Zyczkowski

thank you, dolphinmoon....where can I find that "add-on"?

Try here: https://addons.mozilla.org/en-US/firefox/search/?q=Printed+Selected+Text%22+0.4.3+Legacy+by+Leszek+Zyczkowski&appver=&platform=mac