BUG: collated format and writing of NURBS3DVolume CPs - see #1947
The if(Pstream::master()) clause in NURBS3DVolume::writeCpsInDict() was causing the fileName of the regIOobject not to be allocated in all processors, giving problems when masterUncollatedFileOperation::masterOp was called by collatedFileOperation::writeObject for the mkDirOp.