The game auto-quits if you check the left/right box before you put an item filter in:
Error while running event on_gui_click (ID 1)
beltSorter/control/belt-sorter-advanced.lua:166: attempt to index field 'guiFilter' (a nil value)

Also, can you add a sorter that can handle Bob's Mods' extremely fast belts?

Hi Appex
This issue happened because you tried to update Belt Sorter. Both are not compatible -> You cannot directly migrate. So you need to remove belt sorter (and yes, relaunch a search and recreate each element, sorry for that).

Sorter for Bob Mods : Why not. Can you give me the one you are interested in (and the corresponding mod)? (I don't have bob mods on my session)