First of all DvDShrink only rips, it does not burn. It uses other software's burning engines. IE Nero or DvD Decrypter.
Are you using AnyDvD or Ripit4Me with DvDShrink?
Since DvDShrink is no longer updated it cannot handle the newer copy protections, you need to use a frontend tool to do this for you. IE AnyDvD or RipIt4Me with FixVts.