Hi Rin,
I've got this new error when game is loading catalog plugin

plugins/catalog/db.lua:9: bad argument #1 to 'pairs' (table expected, got nil)
stack traceback:
in function 'pairs'
plugins/catalog/db.lua:9: in function 'for_all_item'
plugins/catalog/db.lua:9: in function 'count_items'
plugins/catalog/db.lua:9: in function 'load'
plugins/catalog/db.lua:9: in function 'insert_item_from_inventory'
plugins/catalog/db.lua:9: in function 'insert_items_from_inventory'
plugins/catalog/db.lua:9: in function <plugins/catalog/main.lua:47>

great plugin btw ;-)

Huh. So that is caused by cat.db.data being nil, but I don't know how it became nil. That should never happen; it should always be at least an empty table. I'll include a safeguard for that in 1.5 if I can't figure out what actually went wrong.

Do you experience this bug regularly, or was this the only time?

It was working fine. I moved settings files from one computer to another and back then. Might be what had triggered it.