I am attempting to install cute chat for dnn version 2.1.2 and i get this exception:

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Info		File cutechatfordnn212/web/cutesoft_server/cutechat/languages\ar-sy.xml read successfully
Info		Loading cutechatfordnn212/Web/DesktopModules/CuteChatControls/lobbies.ascx
Info		File cutechatfordnn212/web/desktopmodules/cutechatcontrols\lobbies.ascx read successfully
Failure		Exception: ICSharpCode.SharpZipLib.ZipException: unknown compression method 9 at ICSharpCode.SharpZipLib.Zip.ZipInputStream.GetNextEntry() at DotNetNuke.Installer.PaInstaller.ReadZipStream() at DotNetNuke.Installer.PaInstaller.Install()