You could be trying to load SpongeBootstrap as a mod. Make sure to read the instructions on the SpongeBootstrap thread (SpongeBootstrap - Fixes ordering issue with other coremods) on how to use it. Apologies if this is not the case. 
You could be trying to load SpongeBootstrap as a mod. Make sure to read the instructions on the SpongeBootstrap thread (SpongeBootstrap - Fixes ordering issue with other coremods) on how to use it. Apologies if this is not the case.