UmberCrow

So for some reason when I go to launch bigdig mod, it won't open, on the launcher it goes through the loading sequence it closes and than just reopens the launcher. Looked into it and it said that my Version.json file wasn't found in modpack.jar. Though its there. I've tried all there is to think of. Downloaded the 64bit version of Java, put up the amount of memory needed. Hell I even uninstalled bigdig. Not to mention I uninstalled Java and the launcher. I updated Java and everything. I got rid of Vanilla Minecraft and reinstalled that too but nooope. Vanilla Minecraft works, but not any of the modded versions. I've tried it all, hell, if there is anything anyone recommends please I'll take it.