CoFH API bug?

A dependency cycle was detected in the input mod set so an ordering cannot be determined
[17:33:22] [Client thread/ERROR] [FML/]: The first mod in the cycle is FMLMod:CoFHCore{1.7.10R3.0.0B6}
[17:33:22] [Client thread/ERROR] [FML/]: The mod cycle involves
[17:33:22] [Client thread/ERROR] [FML/]: Dummy Container (After) @744090132 : before: [], after: []
[17:33:22] [Client thread/ERROR] [FML/]: FMLMod:BigReactors{0.4.0rc10} : before: [], after: [Forge@[10.13.0.1205,), CoFHCore, ThermalExpansion]
[17:33:22] [Client thread/ERROR] [FML/]: FMLMod:CoFHCore{1.7.10R3.0.0B6} : before: [], after: [FML@[7.10.0.1205,7.11), Forge@[10.13.0.1205,10.14)]
[17:33:22] [Client thread/ERROR] [FML/]: APIContainer{CoFHAPI|energy:1.0} : before: [technom, simplyjetpacks, CoFHCore, CompactMachines], after: [CoFHCore]
[17:33:22] [Client thread/ERROR] [FML/]: Dummy Container (AfterAll) @1420115270 : before: [], after: []