So I'm playing around with Forge, not used it much before and I quite like it so far. I currently have an ore that is generated into the world and a dust that I would like people to obtain when they smelt that ore. I have this all done and it seems to work fine right up until I take the dust out of the furnace output slot. This causes me to crash throwing an ArrayIndexOutOfBoundsException: -1

Full stacktrace: https://gist.github.com/anonymous/0879940318d2fa6e45af

Ore Class: https://gist.github.com/anonymous/9584188

Dust Class: https://gist.github.com/anonymous/9584179

 

I'm using Forge 1.7.2 and this only happens when I go to pickup the item from the furnace output slot, If I break the furnace once it has finished smelting I get the item just fine.

 

Thanks

 

Still haven't found a fix for this

We need to see your main class (Arcano), and which includes your registration stuff.

Here https://gist.github.com/anonymous/9586964

It would appear its having an issue with getting the Item Id ? I'm not sure how 1.7 handles Item IDs fully.

Thanks this worked for me (I should stop trusting auto correct that much)