I'm not even sure if the Ace version of KC_Items is being updated seriously, but there were two checkins on the 19th, so maybe.
This is the error I get every time I visit the bank. Even after a completely fresh set of SVs. I'm still looking at the code myself to try to understand what's going on, but I'm brand new at lua. Hoping throwing this out might yield some ideas.
2007/01/20 10:19:41-13-x1]: KC_Items-.95.19286\bank\bank.lua:71: attempt to concatenate a table value
KC_Items-.95.19286\bank\bank.lua:30: in function `?'
Ace-1.4\AceEvent.lua:18: in function `EventHandler'
<string>:"AceEventFrame:OnEvent":2: in function <[string "AceEventFrame:OnEvent"]:1>