I originally posted this as a comment on reddit but now I'm registering it as an issue on GitHub so it's easier for both of us to track. Whenever I play a song with TripleQ installed, the following error message pops up and the button panel changes to red with the error message "Aw, crashed :(":
Error: Spider Monkey Panel v1.5.2 (buttonpanel: buttonpanel by RQ)
left_buttons.buttons.leftb3 is undefined
File: TripleQ_panel_buttons.js
Line: 280, Column: 44
Stack trace:
update_replaygain_button@TripleQ_panel_buttons.js:280:44
on_selection_changed@TripleQ_panel_buttons.js:478:2
I think my setup is pretty normal. foobar2000 v1.6.7 standalone with Windows 10 (not using wine on a mac). Theme was installed into %appdata%\foobar2000. Thank you again for your hard work on the theme and please let me know if you need any additional information to investigate the issue.