WowAce

2x BulkMail2\BulkMail.lua:296: attempt to perform arithmetic on upvalue 'numItems' (a nil value)
[string "@BulkMail2\BulkMail.lua"]:296: in function <BulkMail2\BulkMail.lua:287>
[string "@BulkMail2\BulkMail.lua"]:1362: in function `RefreshSendQueueGUI'
[string "@BulkMail2\BulkMail.lua"]:413: in function <BulkMail2\BulkMail.lua:401>
[string "@BulkMail2\BulkMail.lua"]:423: in function <BulkMail2\BulkMail.lua:421>
[string "@BulkMail2\BulkMail.lua"]:811: in function `?'
[string "@AdiBags\libs\AceHook-3.0\AceHook-3.0-9.lua"]:90: in function <...faceAdiBags\libs\AceHook-3.0\AceHook-3.0.lua:87>

Locals:
basePrice = 0
(*temporary) = <function> defined @FrameXML\MoneyFrame.lua:292
(*temporary) = "SendMailCostMoneyFrame"
(*temporary) = nil

(*temporary) = 8
(*temporary) = nil
(*temporary) = 8
(*temporary) = "attempt to perform arithmetic on upvalue 'numItems' (a nil value)"
sendCache = <table> {
0 = <table> {
}
}
next = <function> defined =[C]:-1
GetSendMailItem = <function> defined =[C]:-1
GetSendMailPrice = <function> defined =[C]:-1
MoneyFrame_Update = <function> defined @FrameXML\MoneyFrame.lua:292
numItems = nil

This is a very easy fix (or seems to be). It might not be the proper fix, but I will leave that to the author when they have time to apply the correct fixes and update the mod.

Line 98 on BulkMail.lua

see that numItems is declared, but not as a number. The code doesnt seem to set that up (maybe it didnt need to in 9.05, I dont know, been years since I played with LUA - like Pre cata days).

Make a new line (line 99). Add the following code.

numItems = 0

If game running, just reload ur UI and the mod starts working again. I didnt test everything, but it now lets me mass send without issues.