Launcher Problems/Modpack Problems

[JayhawkJazzy]

A friend of mine runs a server and just recently moved it from Hexxit to Tekkit. Upon opening my launcher and attempting to open Tekkit, I continually get the error message: "Error retrieving information for selected pack: tekkit"

I also noticed that only two modpacks appear on the left side; Hexxit and Tekkit and both say, "Loading" underneath them.

I attempted to run the launcher as admin to no avail. I also attempted to redownload the launcher, also to no avail.

I'm not very computer savvy so any help here would be much appreciated. Thanks!