Well, you are right this time, although I really did not read your original post, ignored it as a matter of keeping my brain cells safe, but you are right that I am an unpleasent person, and well, even though you crossed those words, but I will commit suicide as you want me to do. Bye! I will miss you guys in hell!

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Why didn't you give a name like "I need help" to this thread? You know that even if I don't... like you, I help you, because I help everyone who needs, that's just my policy.
OK, since you haven't given too much information about the particular error you came across with, and I wasn't able to understand at which stage of the installation process this error appeared, I can't figure out if your .iso file is broken, or what else.
It could be many things actually, maybe the Worms Armageddon folder was deleted without uninstalling the game itself, causing several registry files to remain unconnected on the system and now they could cause problems when trying to install the game.
Try to find out the exact point of the process when you get the error.