WowAce

1352 -- GuildControlSetRank(guildRankIndex);
Block out this line as it is a protected function as of 7.3 should fix the issue..
 
1x [ADDON_ACTION_FORBIDDEN] AddOn 'MultiTool' tried to call the protected function 'GuildControlSetRank()'.
!BugGrabber\BugGrabber.lua:573: in function <!BugGrabber\BugGrabber.lua:573>
[C]: in function `GuildControlSetRank'
MultiTool\MultiTool-7.1.0.002.lua:1352: in function `autoRepair'
MultiTool\MultiTool-7.1.0.002.lua:1294: in function `?'
...ore\libs\CallbackHandler-1.0\CallbackHandler-1.0-6.lua:145: in function <...ore\libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:145>
[string "safecall Dispatcher[1]"]:4: in function <[string "safecall Dispatcher[1]"]:4>
[C]: ?
[string "safecall Dispatcher[1]"]:13: in function `?'
...ore\libs\CallbackHandler-1.0\CallbackHandler-1.0-6.lua:90: in function `Fire'
DataStore\libs\AceEvent-3.0\AceEvent-3.0-4.lua:120: in function <DataStore\libs\AceEvent-3.0\AceEvent-3.0.lua:119>
Locals:
nil

Sorry for such a long delay - it turns out that in 7.3 wow set that function protected because someone slipped an abusive bit of code into an addon  .. instead of just protecting the code that causes a /gdisband, wow just made the entire GuildControlSetRank() function off limits to addons.. unfortunately, you had to set the guild control rank to just query info including "what is my daily withdrawal limit)

long long story short, I am reworking the addon so that it avoids that call ... it means that guild repair will be a "try it then jsut repair without guild repairs"

Sorry for the long delay - I quit wow for over a year and just never saw this.