Just installed, and I'm getting the following error at every login. I even tried to find an option to disable the Tutorial, but couldn't find it.

2x ...ter\Libs\Krowi_Tutorials-2.1\Krowi_Tutorials-2.1-1.lua:418: attempt to perform arithmetic on a nil value
[string "@Krowi_AchievementFilter\Libs\Krowi_Tutorials-2.1\Krowi_Tutorials-2.1-1.lua"]:418: in function <...ter\Libs\Krowi_Tutorials-2.1\Krowi_Tutorials-2.1.lua:417>
[string "@Krowi_AchievementFilter\Libs\Krowi_Tutorials-2.1\Krowi_Tutorials-2.1-1.lua"]:427: in function <...ter\Libs\Krowi_Tutorials-2.1\Krowi_Tutorials-2.1.lua:421>
[string "@Krowi_AchievementFilter\Libs\Krowi_Tutorials-2.1\Krowi_Tutorials-2.1-1.lua"]:592: in function ?' [string "@Krowi_AchievementFilter\Tutorials.lua"]:387: in function <Krowi_AchievementFilter\Tutorials.lua:43> [string "@Krowi_AchievementFilter\Plugins\Overachiever.lua"]:164: in function Load'
[string "@Krowi_AchievementFilter\Krowi_AchievementFilter-42.2.lua"]:56: in function <...\Krowi_AchievementFilter\Krowi_AchievementFilter.lua:35>

Locals:
number = 930
(*temporary) = defined =[C]:-1
(*temporary) = 2
(*temporary) = defined =[C]:-1
(*temporary) = nil
(*temporary) = nil
(*temporary) = 2
(*temporary) = "attempt to perform arithmetic on a nil value"

This is probably fixed by now as tutorials are now at version 3.0. This is also related to Overachiever compatibility so unless I get more info I'm considering this one solved.