Using Cockatrice, when importing the file at https://www.mtgjson.com/files/AllPrintings.json.xz , the import is successful, but any set whose set code begins with "R" or any letter after "R" do not import with any cards. The "Manage sets" section shows that their set codes are there, but no names or release dates are associated with them and their cards are missing.
Using Cockatrice, when importing the file at https://www.mtgjson.com/files/AllPrintings.json.xz , the import is successful, but any set whose set code begins with "R" or any letter after "R" do not import with any cards. The "Manage sets" section shows that their set codes are there, but no names or release dates are associated with them and their cards are missing.