GSE has become unusable. I uninstalled all addons and just loaded the 3 GSE ones in the list. I enabled the lua errors console with

/console scriptErrors 1

I get the following stack trace...

Message: Interface\AddOns\GSE\API\Statics.lua:77: Usage: GetItemInfo(itemID|"name"|"itemlink")
Time: Fri Oct 16 13:14:09 2020
Count: 1
Stack: Interface\AddOns\GSE\API\Statics.lua:77: Usage: GetItemInfo(itemID|"name"|"itemlink")
[C]: in function GetItemInfo' Interface\AddOns\GSE\API\Statics.lua:77: in function value'
Interface\AddOns\GSE\API\Translator.lua:95: in function ProcessVariables' Interface\AddOns\GSE\API\Storage.lua:694: in function ProcessSequenceVariables'
Interface\AddOns\GSE\API\Storage.lua:781: in function OOCUpdateSequence' Interface\AddOns\GSE\API\Events.lua:427: in function ?'
...terface\AddOns\GSE\Lib\AceTimer-3.0\AceTimer-3.0.lua:55: in function <...terface\AddOns\GSE\Lib\AceTimer-3.0\AceTimer-3.0.lua:50>

Locals: (*temporary) = nil

I found the bug - Fix is in 2.6.13