Issue description:

The server is unable to update a block. Not sure which exactly, but it causes a crash.
I think this has to do with sponge so I posted there first but since your mod is also in the report, i reported it here too.
SpongePowered/SpongeForge#1100

Version (Make sure you are on the latest version before reporting):

• Minecraft: 1.10.2
• Forge: 12.18.2.2171
• Refined Storage: 1.2.8

Does this issue occur on a server?
yes

If a (crash)log is relevant for this issue, link it here:

http://pastebin.com/ygfhrhbg

not an RS issue, also, I don't support sponge