9 - this no longer a valid identifier in SetScript in 4.0.1
With the 4.0.1 patch, it appears Blizzard has gotten rid of "this" as a valid identifier in the SetScript, and thus the GuildCheck:CreateGui function is crashing with errors such as this:
Date: 2010-10-15 11:59:11
ID: -11
Error occured in: Global
Count: 17
Message: ..\AddOns\GuildCheck\GuildCheck.lua line 914:
attempt to index global 'this' (a nil value)
Debug:
[C]: ?
GuildCheck\GuildCheck.lua:914
GuildCheck\GuildCheck.lua:913
(There is also a problem with LibGuild with the 4.0.1 patch. I have filed a separate ticket for that on LibGuild's WowAce.com page.)