Using 9.0 beta 1

When attempting to use /gg guild all

3x GuildGreet\GuildGreet-9.0.1-beta.lua:2187: attempt to index field '?' (a nil value)
[string "@GuildGreet\GuildGreet-9.0.1-beta.lua"]:2187: in function GLDG_ListAllPlayers' [string "@GuildGreet\GuildGreet-9.0.1-beta.lua"]:3420: in function ?'
[string "@FrameXML\ChatFrame.lua"]:5093: in function <FrameXML\ChatFrame.lua:5039>
[string "=[C]"]: ?
[string "=[C]"]: in function ChatEdit_ParseText' [string "@FrameXML\ChatFrame.lua"]:4757: in function <FrameXML\ChatFrame.lua:4756> [string "=[C]"]: in function ChatEdit_SendText'
[string "@FrameXML\ChatFrame.lua"]:4793: in function `ChatEdit_OnEnterPressed'
[string ":OnEnterPressed"]:1: in function <[string ":OnEnterPressed"]:1>

please Post the whole log and your complete Addon list.

Looks like an other Addon is the Problem