CubeCraft Games

If its your project:
To fix this, go into the mcp folder (the same folder where decompile.bat was), then inside the conf folder edit the file "mcp.cfg". You need to go to the bottom and change the version numbers for source and target in the textfile change them from 1.6 to 1.8.

To fix "Unrecognized option: -Xincgc": In the same mcp.cfg file delete every occurrence of the -Xincgc option. The last thing you have to do is remove the -Xincgc argument from the VM arguments in your IDE. I don't
know about intellij, in Eclipse that would be right click client, properties, run/debug settings, Client, arguments,

and then under VM arguments just remove the option.
This should work. And it might be your java that isn't up to date.

I only have a decompile file not a decempile.bat?

Ok im stupid i had to update my java... Ty!