Not sure if its your issue or machine power craft but as soon as i update forge to the required version i get the below error

Crash Report GIST

Forge version 2046
AbyssalCraft Vers 1.9.2.8

Closing this issue now. If it's still something that occurs, please re-open it.

There's no stacktrace under the error, so I have no possible way to determine if this has anything to do with AbyssalCraft at all, or if something in MachinePowerCraft breaks with the latest Forge.