When I first jailbroke my iTouch, I had no problems with it until there were some games that I wanted wherein the only available options were from FileApe. Whenever I downloaded files from that site, it always snaps. Good thing Washokusan shared this solution.
Update Installous to the latest version available by adding this source in Cydia. If you already have Installous installed, remove it and download the latest version of Installous 4 from Mod Your Pod repo as shown below.
That is it! You should have no problems downloading from that site.