I get an "appstub.linux signal handler 11" error as soon as it runs.
I've tracked it down to a problem having FreeType statically linked. When Cairo is called (like what GTK uses), it calls FreeType functions in order to render the UI. However, it is linked to a different version of FreeType, and therefore things get a little funky when the actual function call is made to the static library.
To resolve this, Pub.FreeType, on Linux, should really not build FreeType from source, but instead link to the shared object instead - like any good Linux app :-p