So I tried installing the Converter app on my 1.1.4 jailbroken iPod Touch, it gets past downloading package, but when it gets to installing package, it jumps back to my homescreen and nothing is installed. I've tried downloading other apps off "trusted" sources, none of them works, and the same problem occurs. On the other hand, when I download stuff from untrusted sources, like iPod Touch Themes, it works perfectly well. This problem doesn't seem to affect my sister's iPod though, downloading and installing works completely fine on her's. I've tried refreshing sources, restarting iPod, using another Wi-Fi connection, etc, nothing works. Also tried reinstalling my installer, but it tells me I don't have enough space, definitely not true! I didn't have this problem before, please help!