The list of installed JRE\'s is empty, when I click \"add\" the only options I\'m given are -
Execution Environment Description,
Standard 1.1.x VM,
Standard VM.
I had this exact problem with the same version of Eclipse and Mac OS X. A minor detail note, it was the PHP version of Eclipse. I couldn't determine a resolution within Eclipse, but downloading the normal version of Eclipse yielded the ability to select the Mac VM.