Crash on startup with D6 for 1.7.10

[lightning02]

sp614x/optifine#228 (comment)
we already report it to optifine but they blame you.

[sp614x]

The crash is inside a Factorization class (factorization.coremod.AbstractAsmMethodTransform$MutateCall). It probably crashes when trying to modify a base class which is already modified by OptiFine.

[Ushupiuck]

whenever you read this... we'll be awaiting for a fix.