regarding older sins mods,the mod updater can update ANY vanilla sins mod from 1.15 and later to the current 1.191, BUT any mod from earlier than 1.15 IS NOT able to be updated by the mod updater because of several issues including the change of use of the channels in the textures in 1.10, and all the earlier than 1.15 used the ONE mods folder, at least from 1.15 each version has it's OWN mods folder, which helps the mod updater significantly.
harpo