Hello - I've searched here and all over the Web, but can't seem to fix this problem. I'm suddenly unable to open PDFs on a legal website requiring password access. When I click on the links, which worked fine a few weeks ago, I get a "missing plug-in error" using both Firefox and Safari. I have no problem opening PDFs on my system, or PDFs on other public websites. I'm unable to right click and save the PDFs - no matter what, I get the same blank screen and error message. I have PDFs set up to open in Preview (otherwise, they take forever to print), although I do have Adobe Acrobat 9 Pro loaded on my system. Adobe Reader 10.1.0 is also loaded on my hard drive. I tried deleting the Adobe PDF Viewer plug in located in Library, but that didn't make a difference. Not sure if I should or should not delete other files. I've emailed the site administrator, but haven't heard back, and thought I would try here just in case someone can help. No one else in the group I belong to that uses this site is having the same problem. Thanks for any insight you can provide!