File: Dhhmadworld_v1_1_2.rar ... Now

: Use a program like 7-Zip or WinRAR to extract the contents of the .rar file.

Are you using other visual mods like or Community Shaders ? File: DHHMadWorld_v1_1_2.rar ...

: If you are updating from an older version, always delete the old DHH files before pasting the new ones to avoid conflicts. To give you more specific instructions, could you tell me: Which game are you trying to mod? : Use a program like 7-Zip or WinRAR