This is not really an issue for rsmf but related to matplotlib/latex installation. I have a server running Ubuntu where I do most of my work and generate plots. However I never installed LateX there and just used matplotlib to save .pdf files. While trying to run rsmf on the server I got the error:

RuntimeError: pdflatex not found.  Install it or change rcParams['pgf.texsystem'] to an available TeX implementation.

Maybe it could me mentioned that the package will assume your have a working latex environment.