Can someone answer some compatibility issues re: Viking

viking4dAll features are also included in Husqvarna Viking 4D Professional System. Either 4D Embroidery or 4D Embroidery Extra is required before adding optional packages fromI have a Husqvarna Viking readerwriter to transfer embroidery desns to a card that goes into my embroidery sewing machine. It has worked well until recently but now it is not recognized and