New answers tagged osx
I think that prompt should let you move directly to the download page (I've encountered it for some other third-party software), but if not you can download the Java SE Runtime Environment for OS X from [EDITED thanks to szabolcs]: http://support.apple.com/kb/DL1572 But yes, Mathematica is compatible with OS X 10.10. I'm using it right now.
Since I have not heard from anyone I have gotten a copy myself and tested it. It does not work with mathematica and endnote 7 on osx.
Top 50 recent answers are included