iTunes cannot read the contents of the iPad

Connected my iPad and got the error message iTunes cannot read the contents of the iPad. The only option was to restore the device.

Searched for the error message and found apple support page with lots of errors and possible solutions. For me Reset the Lockdown folder did the trick.

Disconnected the iPad and closed iTunes. From /var/db/lockdown I removed the plist file that was left over from the last sync. The date gave it away. Connected the iPad again and all worked fine.