With MC launcher version 2.0.1003, the game freezes when you try to load a game. When using older launcher versions the games load fine, however I cant use any of the FTB mod packs such as Sky Factory.
Comments 2
We do not have enough information to find the cause of this issue.
Please attach the crash report found in [minecraft/crash-reports/crash-<DATE>-client.txt|http://hopper.minecraft.net/help/guides/finding-minecraft-data-folder] here.
If you cannot find a crash report, please attach the full launcher log found in [minecraft/launcher_log.txt|http://hopper.minecraft.net/help/guides/minecraft-logs/].
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You'd better use the Minecraft Launcher project to report this XD.
And this issue tracker seems to not support non-vanilla stuff.