I am using Sublime Text 2 with LatexTools on OS X 10.6. When I build, I get "TraditionalBuilder: Invoking latexmk... done." Yet Skim does not open the PDF. The problem might be related to the result of typing 'latexmk' in Terminal:
File::Path version 2.08 required--this is only version 2.07_02 at /usr/texbin/latexmk line 121.
What is the solution?