I've found another workaround to this problem. If you open Firefox 11 in 32-bit mode, it will be able to display PDF files.

To open Firefox in 32-bit mode, quit Firefox, go to the Applications folder, right-click on Firefox and click on "Get Info".

Then, under General, you should see a checkbox where you can have Firefox open in 32-bit. Close this window and restart Firefox and you should be good to go.

Thanks for the work around! Anybody know of other updates to fix this problem without having to run Firefox in 32 bit mode?

This is a re-post of a success I had fixing the same problem. Go to [Menu] Tools/Add-Ons/Plugins and disable the Adobe Acrobat NPAPI 10.1.3 reader plugin. It seems to be a common problem, and Adobe will fix it. But for now, this may work.

With this plugin disabled you'll see your download dialog box again.

Thanks for posting the workaround. But damn, now none of our PDFs will display for people running FF 11 and Reader 10.1.3? I really hope they fix this bug soon.

This issue appears only using the combination MacOS X, Firefox 11 with the Adobe Acrobat (Update 10.1.3) Viewer Plugin. As workarround you could do a "rightklick" and "save" as the pdf will work with the Acrobat viewer itself

From: https://support.mozilla.org/en-US/que.../925239.

You can also go into Firefox > Preferences > Applications and look for "PDF file"

Next to that, select use Adobe Acrobat (or use Preview) rather than Adobe Acrobat NPAPI 10.1.3

Adobe's NPAPI plugin doesn't work in 64-bit Firefox ... there's probably a bug where the Adobe Reader update is setting that preference.

d0ckw0rka and Cww,

Thanks very much for these solutions. This is very helpful.

This is incredibly frustrating. I have FF 11 with Adobe Reader 10.1.3 on the latest MacBook Pro 17", just bought. With the pace of work I have, and the constant use of internet sites that require me to glance at, review, skim PDF documents in another window, I have to have this capability. I DO NOT want to downloand the PDF clutter and create more work having to clean the stuff out. Safari has its problems, but the PDF viewer works there. However, Chrome will be my home browser now. FF used to be so reliable, and compatible with everything! Bye Bye For Now. (BBFN?)

chemenway,

I understand your frustration. My organization posts bids and RFPs to vendors using PDFs, and a lot of these folks use FF11/Reader 10.1.3. We basically now have to edit all those posts to alert them to this problem and offer a workaround.

Many thanks for this. It took me a whole morning to work out that the problem was with Firefox rather than anything else and thought it would take me much longer to sort it [I'm a bumbling idiot when it comes to the inner workings of computers!] Anyway, it's now solved thanks to your solution. The only thing that did baffle me a little bit was that I couldn't find a reference to a "PDF file" in the Applications part of Firefox preferences but when I clicked on "asp file" and changed to "use Adobe Acrobat" that did the trick. I'll now go and lie down in a darkened room.

Thanks for the advice. With plug-in disabled, all OK.

Right click where. If I right click on the URL with the pdf file name all I get is a dialog box with Undo, Cut, Copy, etc.

Apparently, some people have PDF File listed under Applications, some have Adobe Reader Document, some have Preview Document, Adobe PDF File, Portable Document File...

Just look for the line that corresponds to PDFs and is using Adobe Acrobat NPAPI 10.1.3

the latest version of adobe plugin fix the problem.u can download it from. http://www.macupdate.com/app/mac/73/adobe-reader

That appears to be the same package that's available from Adobe (10.1.3). That's the one that caused the problem in the first place.

It works, but the pdf form does not keep any of the form fields - urghh

Most PDF reader software doesn't save form fields (although I think Preview actually might). Try downloading the PDF file to your computer and then opening it in Preview.

I had the same problem, but got tired of searching on forums to try to solve it. So I tried the PDF add-on for Mozilla Firefox. Works like a charm. And it´s fast too! No more headache.

It can be found on:

https://addons.mozilla.org/en-US/firefox/addon/pdfjs/

Simple solution for me: went to FF 13.0.1 Preferences (Mac OS X 10.7.4) and clicked on the arrows and changed from "Use Adobe Acrobat and Reader Plug-in (In Firefox)" to "Use Adobe Reader 7" and voila - success!!

I have FF 13.0.1 Preferences (Mac OS 10.7.4) set to - Content type: Adobe PDF document, Action: Use Adobe Reader. This seems to work fine. I am using Adobe Reader 10.1.3. When I click on a PDF document on a website, it opens in Adobe Reader and a copy is downloaded to my desk top, where I initially down load files.