How to Debug an iPhone App after an ad Hoc Build?

Question

I did a ad Hoc Distribution of my App now i want to to Debug it again (i have changed something with CoreData) but i cant.

If i press Debug unsing the Settings for Distr

Answer 1

In addition to making sure your current Debug build is using the correct Developer certificate, you might want to un-select the entitlements.plist in your non-Ad-Hoc Target's file inclusion pane if you have one.

If that still doesn't work, deleting the Ad Hoc certificate and app from your iPhone, rebooting it, restarting Xcode, and installing a clean build sometimes causes a borked debugger connection to start working again.