From what I understand: these three packs SHOULD be forward compatible with 1.6. If that is the case, how would worlds created with these packs react to mods like Redpower 2 and Xycraft, if they were to be added later with the 1.6 update?
I guess what I'm asking is if you start a world with Unleashed, Unhinged, or DW_20 modpacks, will it require another restart at the 1.6 update to add Redpower, Xycraft (assuming they are released for it), or some other mod similar to those?[DOUBLEPOST=1374962235][/DOUBLEPOST]
I had this problem too. I was using 32 bit Java instead of 64 bit. Once I was using the right one, everything was good. Maybe try that?
No one knows about red power. In theory all you need to do would be a new mystcraft world or some new chunks.
Xycraft for 1.6 though. Its supposed to be a world killer. Or at least incompatible with worlds made with old versions.