[NTG-context] SciTE & ConTeXt

Hello, I tried to follow the PRAGMA document for setting up SciTE to run with ConTeXt. The "Tools" menu seems to recognize that I am trying to process a ConTeXt file and the syntax highlighting seems to fit as well. However, when trying to Compile or Build, SciTE tells me

mtxrun --autogenerate --script context --autopdf --pdf myfile.tex sh: mtxrun: not found Exit code: 127

When running mtxrun from the terminal or from the shell (by entering sh in the terminal) it works fine. My $PATH variable is set to find mtxrun (and context). How come SciTE can't find it? Many thanks. Severin P.S.: Does the --autopdf option try to automatically open the output? If so, how can I change the default to evince?