oik-fields update failed

[bobbingwide]

When viewing Plugins -> Updates Available, attempting to update oik-fields can lead to an Update failed message. oik-fields is delivered from the oik-plugins server.
It is however possible to update to update other oik plugins such as oik-sc-help.
This worked from handmadestudios.org on 2018/01/10 at 10ish.