These instructions apply to both v7.9 standard and 7.9 NC. The operation of the ToEE Front-End utility, TFE-X, has changed with version 7.9 of the modpack. TFE-X no longer requires .NET Framework to operate. Instead, it requires the Java Runtime Environment. That's a scary-sounding way of saying that it requires something you very, very likely already have. However, to make sure, go to Start > Control Panel > Add or remove programs and look for Java listed there. If it's there, great, you're all set. If it's not, go to this link and download it: http://java.com/getjava Java will not have any adverse effect on your system. It's extremely common and is used everywhere. Adding it will only help you. Java 1.6.0 (aka Java 6) is the minimum required version. You very likely have that or a higher version already. The old TFE-X is no longer needed, and the new TFE-X is a drop-in replacement. It will be installed automatically by the modpack installer with no extra maneuvers required by you. But the old TFE-X files will not automatically be deleted. You may want to manually delete the following files from your ToEE root directory, though it's not necessary and these files won't affect the operation of the new TFE-X: ICSharpCode.SharpZipLib.dll Interop.IWshRuntimeLibrary.dll TFE-X.jpg TFE-X-linux TFE-X-repair.exe TFE-X-repair.txt One final note: though the installation utility says that TFE-X will start automatically after the modpack is installed, it actually won't if you are running ToEE and Co8 on a non-Windows system, such as Linux or Mac OS X. If that's the case, you will have to manually launch TFE-X the first time by navigating to your ToEE root directory and double-clicking TFE-X.sh. Please see this thread for further and more detailed information about the new ToEE Front-End X.