TeXstudio + Latexmk won't compile (with OS X): “Error: Could not start command: …”

I recently switched from Texmaker to TeXstudio (version 2.10.8). In Texmaker, I used to compile my document with Latexmk. In TeXstudio, however, the default Latexmk command returns an error message. I work with OS X Yosemite (version 10.10.5) and TeX Live. Here is an example:

documentclass[10pt, a4paper]{article}
usepackage[T1]{fontenc}
usepackage[utf8]{inputenc}
usepackage[ngerman]{babel}
usepackage{hyperref}

begin{document}
Some text.
end{document}

My build settings in TeXstudio (Default compiler = Latexmk):

And the corresponding command settings (latexmk -dvi -silent %):

And this is the error I get:

The document compiles normally when I choose PdfLaTeX instead of Latexmk.
I have seen related posts on stackoverflow, but none these included a solution for Latexmk. Does anybody know a solution to this problem?

EDIT: As ig0774 suggested, I changed the path to /usr/texbin/latexmk -dvi -silent % and pressed OK. When reopening the settings of TeXstudio, the path was set back to latexmk -dvi -silent %. Is this a bug or am I missing something?