[Kate]

nope, no addons
just switch the bots to assist on last boss, is the only thing i can think of if for some reason the script is not doing what its written to do (i.w switch mobs when they pop), as i said i have not had any problems with the last boss in many runs so have no way of even testing why its failing for you.

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TRY THIS version added to OP
Have changed the radius, wait time etc for last boss