PlayerNames.lua:94 - GetChannelName can return nil on the CoA-Beta client
when the active channel target is not joined; capture into a local and
fall back to empty string instead of chaining :lower() on nil.
PlayerNames.lua:344 - GetGuildRosterInfo(i) returns nil name/class on
this client (same family as the AltNames.lua fix in 1c4a7e8). Skip the
iteration when name is nil to avoid indexing channels.GUILD[nil] and
passing nil into AddPlayer.
Chatter.lua:204 OpenConfig and Chatter.lua:21 inline func - the Blizzard
InterfaceOptionsFrame globals are absent on CoA-Beta, so calling
IsResizable() or InterfaceOptionsFrame_OpenToCategory() throws. Guard
both call sites and fall back to opening the standalone AceConfigDialog
window.
ChatScroll.lua:53 - InterfaceOptionsSocialPanelChatMouseScroll_SetScrolling
is also missing on this client; only hook it when the global exists,
otherwise AceHook errors out at OnInitialize.
GetGuildRosterInfo returns nil for the public-note and rank fields on the
CoA Beta client, so ScanGuildNotes crashed at AltNames.lua:331 on
strlower(note). Guard note and rank the same way upstream already guards
name, and skip the alt-note fallback entirely when there is no note.
florian.berthold