Mac OS X 10.10 Yosemite
Just a quick word about running ND on the recent OSX Yosemite update which seems to be confusing a few users...
If you don't already have the Apple Yosemite Java Update installed, then the first time you run ND on Yosemite you'll see the following popup:
So to actually download the Apple Java Update you need to click "More Info" and not just to read more info ;) That button goes to this page:
If you're using Safari there are reports on the Interwebs about the page just showing up blank.. Seems it's something to do with Apple Cookies (yum!) so if that happens to you then just visit the Apple Support homepage and then go back to the above link:
Once that update is installed ND will startup just fine. Apple did something similar for Lion iirc, but the text on the popup made more sense!