Custom currency not working

Here's the config as requested:

 

FurnaceUpgrades.json

its working though for me

Curious. I wonder what the conflict could be. Thank you for sanity checking this for me though mate, thank you for your time and fast response. 

I just set the skinid as your config skinid for the blood

Again, thank you so much for checking this for me. I'll unload a few plugins once my player count is down. My test server hasn't been updated yet so I haven't been able to test this elsewhere. 

I'm thinking I may do a server restart in a hour and see if that fixes things. I'll dish out a few supply signals to players to try and keep them happy haha!