Florian

Found the problem for `itemTypes`. The valid URI is `https://api.zotero.org/itemTypes`. Calling `lib.get('itemTypes')` however, constructs the following URI: `/users/[userId]/itemTypes` which results in a `404`. So in the end, the overwrite might...

Ah, right. `client.get('/itemTypes')` does the trick ;) // edit: corrected URI

some more info related to this bug here: https://labs.bitpay.com/t/payment-channels-consumer-setuprefund-failing/416

Thanks @maraoz ! It seems you do have a clue as to where the problem may be located, at least roughly. Could you provide a guesstimate? :-) Also, would we...