If you are having any problems, head over to the forums and post a thread about it or use Contact Us Page on the Official Website. http://rpggamingsuperbia.enjin.com/
Installing a modpack using the Technic Launcher is easy. If you don't already have the launcher downloaded, visit our download page to get the latest version.
Type in the modpack name (Gaming RPG Pack) or paste the following url into the search box.
Finally, click Install at the bottom right of the launcher after you select Gaming RPG Pack from the list on the left. The launcher will handle everything else!