I was forwarded here from the kibe mod. it appears that my issue could most likely be lib block attributes.

https://hastebin.com/aqujiqatub.coffeescript

tried to put a hopper on a block (big torch in kibe), tried to feed torches into it.. crash.

I was forwarded here from the kibe mod. it appears that my issue could most likely be lib block attributes.

https://hastebin.com/aqujiqatub.coffeescript

tried to put a hopper on a block (big torch in kibe), tried to feed torches into it.. crash.
I think your issue is this.
lucaargolo/kibe#25

But I had same issue
I had another crash but this,

After the lever turn off, server will crash
crash-log

This will cause crash too,
But [Block being ticked] is upper dropper

Ok, this should not be fixed in 0.8.5. To be honest I'm not sure if the original crash has been fixed by this, but the report has expired so I have no idea.

Yes, it fixed.

Thanks!