I get a bunch of gtk errors on startup and I cannot open the "browse" windows to set the paths in the option menu.
Strangely, "Add" button works for mame executable and ROMs path, but not for samples. Pressing "Remove" under samples opens the browser (but does not set the path).
I am attaching console error messages given upon startup and upon opening the "directories" window. No error is produced by pressing on "add" or "browse".
I am running Arch_x86_64 and installed gmameui compiling from source through AUR