When I install certain apps, like iSpazio Themebuilder, or themes like 3dee summerboard theme, they seem to install ok, but then I can't find them anywhere on the iPhone. I can't even find them when I SSH to the phone. And one of them--3D bold black dialer--won't uninstall, even though it wasn't there in the first place. I get that 'Main script execution failed' message. Any ideas?