Troll Management?

[Mikirin]

It seems that there are trolls attacking my forum, I don't want to delete them, but I need something like the "annoy user" mod. Even though it says it works with RC3, I get this error when I try to install it, and I don't want to break the forum.

Error in Package Installation
At least one error was encountered during a test installation of this package. It is strongly recommended that you do not continue with installation unless you know what you are doing, and have made a backup very recently. This error may be caused by a conflict between the package you're trying to install and another package you have already installed, an error in the package, a package which requires another package that you don't have installed yet, or a package designed for another version of SMF.

Hello,I also have this problem.Can somebody please guide me step by step how to resolve it?
thank you in advance

Read up, the nice man helped me.