What steps will reproduce the problem?
1. I log into WoW and the following errors occur.
2. The first error seemed to be because I downloaded a French version of the most recent Necrosis.  (The error below cited a line in a file and it was in French.)
3. I found an alternate download of Necrosis, deleted the French one, and downloaded one in English.  The second error came up when I logged in to WoW, and looking at the file it cites, I don't see a line 90 at all.

At what time and date (year, month, day) did you get this bug? (Include your timezone)  This occured on January 7, with timestanps below.  Eastern Time, USA.  I use Windows Vista.  I played WoW through this April with no Necrosis problems.  I canceled my account for a few months, and can't seem to get Necrosis up and running now that I've reactivated it.

Please provide any additional information below.
Date: 2009-01-07 22:10:59
ID: 1
Error occured in: Global
Count: 1
Message: ..\AddOns\Necrosis\Initialize.lua line 89:
   attempt to call method 'CreateWarlockUI' (a nil value)
Debug:
   [C]: CreateWarlockUI()
   Necrosis\Initialize.lua:89 Initialize()
   Necrosis\Necrosis.lua:349 OnLoad()
   [string "*:OnEvent"]:1:
      [string "*:OnEvent"]:1
AddOns:
  Swatter, v3.1.9 (<%codename%>)
  Babylonian, v5.1.DEV.130
  Configator, v5.1.DEV.160
  Gatherer, v3.1.9
  Necrosis, v3.0 RC2   SlideBar, v3.1.9 (<%codename%>)
  (ck=a1)

(Error 2 - I don't see the file this references - hidden or just not there.)
Date: 2009-01-07 22:30:19
ID: 1
Error occured in: Global
Count: 2
Message: ..\AddOns\Necrosis\Initialize.lua line 90:
   attempt to call method 'CreateWarlockUI' (a nil value)
Debug:
   [C]: CreateWarlockUI()
   Necrosis\Initialize.lua:90 Initialize()
   Necrosis\Necrosis.lua:343 OnLoad()
   [string "*:OnEvent"]:1:
      [string "*:OnEvent"]:1
AddOns:
  Swatter, v3.1.9 (<%codename%>)
  Babylonian, v5.1.DEV.130
  Configator, v5.1.DEV.160
  Gatherer, v3.1.9
  Necrosis, v3.0 RC1
  SlideBar, v3.1.9 (<%codename%>)
  (ck=a1)