I know this is an out there thing to ask to a random person...but I was wondering if you would be able to help me make a modpack?
2.4.1a update includes updates for Chromaticraft and DragonAPI which should resolve the java argument issues. To enter the chroma dimension you will still require them, but the rest of the pack will function fine without.
Major update released today, version 2.4c is not compatible with older worlds. You can update, but some blocks may be missing and you will miss out on new worldgen