[Garkin]

I'm not really sure if this will help, but Thelegendaryof (in this topic) said, that this issue can be caused by editbox method :SetKeyboardEnabled(...). Try to find an addon that has text "SetKeyboardEnabled" in .lua file.

As for the Alchemist addon, it works for me without any errors. The only issue can be with the embedded Unicorn library as it exposes variable self to the global space. It can cause conflicts with other addons. If you want to fix it, open Alchemist\lib\Unicorn\Unicorn\List.lua in text editor and change line 207 from:

self = {

to:

local self = {