mac cant open .cpgz file or jar files

[luzybird]

Hello,

I'm trying to run the mobs mod but once I downloaded citadel i tried to extract it and it turned the .jar file to a .cpgz file. Is there any way I can open the jar file and not turn into a .cpgz file?

[luzybird]

also to add, my mac for some reason can't run .jar files even though i have java launcher. The only way my mac makes my mods work is by using utility archive and then opening the .jar file to a folder.