I think I fixed the problem.
This modpack is experiencing some problems.
This modpack is down until further notice.
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 (Httyd 1.7.10) or paste the following url into the search box.
Finally, click Install at the bottom right of the launcher after you select Httyd 1.7.10 from the list on the left. The launcher will handle everything else!