What is it with Firefox’s developers these days? Every other release of Firefox seems to overwrite at least one existing setting … with a broken feature.
Firefox version 22.0 disables your PDF viewer and replaces it with a non-working proprietary viewer from Mozilla
Cure is quick:
Note: this works because “always ask” is less annoying than it sounds. It merely means “let me open it or save it”, and it will use whichever viewer you last used. On OS X that – out of the box! – means the system PDF viewer. Which works perfectly on everything except bizarro-interactive-secure-encrypted Adobe docs/em>
…but really: what was the point? Until now, Firefox worked perfectly (considerably better than Chrome, which *also* has a broken PDF viewer (*))..
(*) – although Chrome’s proprietary viewer is considerably “better” than Firefox’s, it’s still bad: it’s much slower than the OS built-in viewer, and neither browser’s viewer works for more than 50% of real-world PDF’s I encounter on a day to day basis.