I can't download or preview PDFs on browser since installing Adobe Reader 10.1.3 on my MacBookPro OS 10.7.2. The Internet option in the Adobe Reader preferences does not allow me to click on the Display PDF in Browser. The box is shadowed. Not sure how to proceed to fix this problem. I use Firefox 6.0.
Dropped support for:
• All versions of Firefox prior to 10.0.
The latest Acrobat/Reader update 10.1.3 provies a plugin for viewing pdf in Firefox version 10.0 and later.
Try running Firefox in 32bit mode (via Applications -> Cmd+Click on Firefox icon -> Get info -> Check "Open in 32bit mode")