[TheLastSuperman]

Firefox 40 here but I adjusted my about:config and have done many warranty voiding things (I can run plugins and themes not marked as compatible and other novel things woohoo) so I can't even begin to offer suggestions other than this one:

Seems this is a known issue in IE and certain sites (depending on how their server/php is setup but does not mean its wrong) see post #21 here - http://blenderartists.org/forum/show...p-files/page2&

Make sure to edit your settings in IE11;
> Menu > Tools > Compatability View settings > Add vbulletin.org to the list, should be fixed now .

Edit: No offense intended however most of you are actually searching for this info right? I typed in "attachments saving as .php files?" into Google and BAM there it was in the top three search results... I'm going to just go now .

Edit #2: Also so you know, if you ever visit a site and attempt to download an attachment/image or simply click on a link and it opens the save dialog box... it can be several things... PHP Version on said site has changed / recent .htaccess change / usually some type of configuation OR setup change recently made so if you're ever working on your site then it acts a fool simply revert the recent change made and viola, should return to normal.