GSE does not save macro changes.

Message: Interface/AddOns/GSE/API/StringFunctions.lua:153: bad argument #1 to 'gsub' (string expected, got nil)
Time: Thu Oct 12 16:34:44 2023
Count: 1
Stack: Interface/AddOns/GSE/API/StringFunctions.lua:153: bad argument #1 to 'gsub' (string expected, got nil)
[string "=(tail call)"]: ?
[string "=[C]"]: ?
[string "=[C]"]: in function gsub' [string "@Interface/AddOns/GSE/API/StringFunctions.lua"]:153: in function TrimWhiteSpace'
[string "@Interface/AddOns/GSE/API/StringFunctions.lua"]:352: in function RemoveComments' [string "@Interface/AddOns/GSE/API/Storage.lua"]:1403: in function CompileTemplate'
[string "@Interface/AddOns/GSE/API/Storage.lua"]:519: in function OOCUpdateSequence' [string "@Interface/AddOns/GSE/API/Events.lua"]:630: in function ?'
[string "@Interface/AddOns/Ace3/AceTimer-3.0/AceTimer-3.0.lua"]:55: in function <Interface/AddOns/Ace3/AceTimer-3.0/AceTimer-3.0.lua:50>

Locals: (*temporary) = defined =[C]:-1

Originally posted by @Light-provad in #1361

This is a GIGO error not a bug. (Garbage in, Garbage Out) You have a broken template that GSE is unable to read. As soon as you identify and fix of remove the broken template this will resume working and saving as per normal. Will follow up on the original discussion.