similar question asked at rdna. Mac user had runtime on C:drive, which is big problem in re: permissions, file directory and finder.

In OS X, PP2012 default install places both Poser Pro 2012 folder and Poser Pro 2012 Content folder in Applications folder, which violates protocol but which works anyway. PP2014 default install places Poser Pro 2014 folder in Applications folder and Poser Pro 2014 Content folder in Users/Shared folder.

whilst I didn't reply to rdna thread to avoid argument, you can add as many runtimes as you like, each enclosed in folder with distinct name, to top level of Poser Pro 2012 Content folder. once you make big directory change like this, you repair directory and repair permissions from other start-up disc. in yosemite you do this by restart, wait for bong, then hold down cmd-R. no external drive needed. you set poser for deep search.