crash on 1.2.1 with REI installed

[SpeedRider]

https://paste.ee/p/17Hiz
"Can't load REI plugins from class abused_master.refinedmachinery.rei.RefinedMachineryPlugin: REI plugin is too old!"

[UpcraftLP]

known issue, but the mod is currently unmaintained. see #59 for a fix.

(also note that refined machinery is not compatible with optifine)