After installing and converting Skyblocks and playing for a while, the game froze suddenly, then crashed completely. I have got optifine, inventory tweaks and minecraft forge installed and so they may be the cause, or it could be the artificial environment of skyblocks. I'm not sure.
This ticket is invalid as it relates to a modded or 3rd party client/server.
Any non-standard client/server build needs to be taken up with the appropriate team, not Mojang.
Any plugin issues need to be addressed to the plugin creator.
This site is for addressing issues related to the base unmodded Minecraft.