When i load the mod i get the error:
Event: Real number expected got nil.

I disabled all of mods besides the picker stuff but that didn't fix it.

When you load the mod it also gives you a stack trace with line numbers and calling functions. So please post the log file for any chance of this getting fixed. Thank you

Don't know how to add files here, so: https://justpaste.it/7x5w5

I think these are the relevant lines:
13.012 Checksum for script PickerAtheneum/control.lua: 3233250321
13.024 Checksum for script PickerInventoryTools/control.lua: 2590148413
13.034 Checksum for script PickerBlueprinter/control.lua: 1244192788
13.044 Checksum for script PickerExtended/control.lua: 91545251
13.124 Script @stdlib/stdlib/event/changes.lua:100: PickerBlueprinter: version changed from nil to 1.1.5
13.161 Script @stdlib/stdlib/core.lua:46: PickerInventoryTools:'event': real number expected got nil.
13.185 Script @stdlib/stdlib/core.lua:46: PickerInventoryTools:'event': real number expected got nil.

Ok I am not sure what is causing this. Would it be possible for you to upload the save game with the issue?

Sent you a pm on the forums.

I ran into the same issue with the "Nauvis Post Collapse Demo" scenario - stdlib unfortunately suppresses backtraces. After patching it, the real error is:

Error while running event PickerInventoryTools::on_tick (ID 0)
'event': real number expected got nil.
stack traceback:
        [C]: in function 'raise_event'
        __stdlib__/stdlib/event/event.lua:497: in function 'raise_event'
        __PickerAtheneum__/scripts/intra-mod-ticker.lua:16: in function 'handler'
        __stdlib__/stdlib/event/event.lua:342: in function 'no_pcall'
        __stdlib__/stdlib/event/event.lua:362: in function 'dispatch_event'
        __stdlib__/stdlib/event/event.lua:438: in function <__stdlib__/stdlib/event/event.lua:396>"

I logged "event" at that place and got this:

{
  entity = {
    __self = "userdata"
  },
  ran_once = true
}

Hope this helps.

As a hack workaround to get it at least somewhat working, I edited PickerAtheneum_1.2.4/scripts/intra-mod-ticker.lua and replaced line 16:

        Event.raise_event(event.name, event)

by

        if event.name then Event.raise_event(event.name, event) end