Error spammed when opening mailbox (with 4 recovered items from Postmaster and Thaumaturge)

824x CT_MailMod\CT_MailMod_MailLog.lua:330: attempt to perform arithmetic on local 'olderExpires' (a nil value) [string "@CT_MailMod\CT_MailMod_MailLog.lua"]:330: in function <CT_MailMod\CT_MailMod_MailLog.lua:309> [string "@CT_MailMod\CT_MailMod_MailLog.lua"]:422: in function logFunc'
[string "@CT_MailMod\CT_MailMod_MailLog.lua"]:376: in function logPending' [string "@CT_MailMod\CT_MailMod_MailStructure_Incoming.lua"]:277: in function retrieveSelectedMail'
[string "@CT_MailMod\CT_MailMod_MailStructure_Incoming.lua"]:1176: in function action' [string "@CT_MailMod\CT_MailMod_MailActions.lua"]:236: in function key'
[string "@CT_MailMod\CT_MailMod-9.1.0.3.lua"]:99: in function <CT_MailMod\CT_MailMod.lua:94>

Locals:
self =

{
loadMail = defined @CT_MailMod\CT_MailMod_MailStructure_Incoming.lua:26
filterName = defined @CT_MailMod\CT_MailMod_Utility.lua:32
actionRetrieveMail = defined @CT_MailMod\CT_MailMod_MailStructure_Incoming.lua:1157
getmaq = defined @CT_MailMod\CT_MailMod_MailActions.lua:72
removeMailAction = defined @CT_MailMod\CT_MailMod_MailActions.lua:40
beginProcessing = defined @CT_MailMod\CT_MailMod_MailActions.lua:83
returnSelected = defined @CT_MailMod\CT_MailMod_MassOpening.lua:115
updateMailLogButton = defined @CT_MailMod\CT_MailMod_StockUI.lua:912
getTimeFromOffset = defined @CT_MailMod\CT_MailMod_Utility.lua:20
showMailLog = defined @CT_MailMod\CT_MailMod_MailLog.lua:990
logIncoming = defined @CT_MailMod\CT_MailMod_MailLog.lua:388
cancelProcessing = defined @CT_MailMod\CT_MailMod_MailActions.lua:132
hideMailDeletePopups = defined @CT_MailMod\CT_MailMod_MailStructure_Incoming.lua:540
inboxUpdateMailboxCount = defined @CT_MailMod\CT_MailMod_StockUI.lua:112
updateMailLog = defined @CT_MailMod\CT_MailMod_MailLog.lua:984
downloadMail = defined @CT_MailMod\CT_MailMod_MailStructure_Incoming.lua:1122
convertMoneyToString = defined @CT_MailMod\CT_MailMod_Utility.lua:165
currentMailAction = defined @CT_MailMod\CT_MailMod_MailActions.lua:68
isProcessing = true
toggleMailLog = defined @CT_MailMod\CT_MailMod_MailLog.lua:1001
pauseProcessing = defined @CT_MailMod\CT_MailMod_MailActions.lua:122
clearMailActions = defined @CT_MailMod\CT_MailMod_MailActions.lua:32
actionReturnMail = defined @CT_MailMod\CT_MailMod_MailStructure_Incoming.lua:1185
addMailAction = defined @CT_MailMod\CT_MailMod_MailActions.lua:25
logOutgoing = defined @CT_MailMod\CT_MailMod_MailLog.lua:448
scaleMailLog = defined @CT_MailMod\CT_MailMod_MailLog.lua:1013
externalDropDown_Initialize = defined @CT_MailMod\CT_MailMod_Options.lua:368
timeoutValue = 30
hideOpenMailTakeItemPopups = defined @CT_MailMod\CT_MailMod_MailStructure_Incoming.lua:794
initOpenMail = defined @CT_MailMod\CT_MailMod_OpenMail.lua:24
zeroMailUpdater = defined @CT_MailMod\CT_MailMod.lua:84
processingEnd = defined @CT_MailMod\CT_MailMod_MailStructure_Incoming.lua:1370
updateMailLogColor = defined @CT_MailMod\CT_MailMod_MailLog.lua:1019
name = "CT_MailMod"
tooMuchMail = false
inboxUnselectSingle = defined @CT_MailMod\CT_MailMod_MassOpening.lua:50
inboxUnselectAll = defined @CT_MailMod\CT_MailMod_MassOpening.lua:33
beginIncomingAction = defined @CT_MailMod\CT_MailMod_MailStructure_Incoming.lua:1380
newOutgoingMail = defined @CT_MailMod\CT_MailMod_MailStructure_Outgoing.lua:24
printLogMessage = defined @CT_MailMod\CT_MailMod_MailLog.lua:296
options = {
}
nameIsPlayer = defined @CT_MailMod\CT_MailMod_Alts.lua:26
getPlayerName = defined @CT_MailMod\CT_MailMod_Utility.lua:27
registerMailUpdater = defined @CT_MailMod\CT_MailMod.lua:79
update = defined @CT_MailMod\CT_MailMod_Options.lua:213
actionDownloadMail = defined @A`