pasos
les dejo el nuevo set
Pasos para instalarlo
1. Get a Back-Up Master Base.
2. Put MWS in Deck Edit Mode.
3a. Click on the Library (Top or Left), save.
3b. Analyze/Add/Remove Sets
4. Add Conflux with key CNF.
4a. To be added shortly.
5. This should say added 145 cards.
6. Click a card in the left hand column (top), from the library, then go to File, Save Deck/Library.
7. Here it still wont work and gives the error. So close MWS, then
reopen it. This seems to do the trick for me. Sorry if this is
patronizing but it's all I did.
Link
http://forums.mtgsalvation.com/attachment.php?attachmentid=83649&d=1232974535