DTDeviceKit: Could not start house arrest service for app identifier XXX

I filed a technical support ticket with apple. Turns out it's a bug which affects 32 bit devices. So if you test on a 64 bit device you won't have this issue.

I was trying to find out if DTDeviceKit was running on my machine, but it did not. My next suspicion was that it could be running on the phone.

After rebooting my phone, it works.