Decursive LibQTip error

Hello there, after unsuccessfully trying to find something, I call on you experts to help me resolve this issue that's bugging me.
Game runs smoothly on OSX High Sierra (10.13.6), but Decursive addon is not working, I'm using the files from this sub-forum thread; the specific ones for 3.3.5a

Code:

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Date: 2019-03-24 16:42:26
ID: 1
Error occured in: Global
Count: 1
Message: ..\AddOns\Decursive\Dcr_LDB.lua line 57:
  Cannot find a library instance of "LibQTip-1.0".
Debug:
  [C]: ?
  [C]: error()
  Titan\libs\LibStub\LibStub.lua:23: LibStub()
  Decursive\Dcr_LDB.lua:57: in main chunk
AddOns:
  Swatter, v3.1.14 (<%codename%>)
  Decursive, v2.5.1-16-g65d01fe
  Titan, v4.3.8.30300 - Revision 386
  TitanAmmo, v4.3.8.30300
  TitanRepair, v4.3.8.30300
  TitanVolume, v4.3.8.30300
  BlizRuntimeLib_enUS v3.3.5.30300 <logon.warmane.com>
  (ck=f0)

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https://i.imgur.com/0Q99SM8.png

Hope you can throw some light on it. TY.