If you’re one of those guys with a hacked iPhone, you might get this error with the InstallerApp, nothing serious, just one of the repositories has changed location.
New Repository Location
Go to Sources in Installer.app.
Tap the Edit button. Click on the - icon over Ste Packaging source line to delete it.
Tap the Add button and type the right new URL for STE Packaging source:
New location => http://repo.smxy.org/iphone-apps/