In your installation folder there's a folder called "CustomConfig". There should be a file named deck_config.ini. Open that file and write TheNameOfYourDeck = default

in your CustomConfig folder edit the deck_config.ini at the bottom you see a CONFIGS this is where you make it look like this but replace Test* with your deck name:
**if no Deck_Config.ini just make one and add the following**
[CONFIGS]
PirateWarrior = warrior_pirate
TestDruid = Default
TestRogue = Default
Testlock = Default
TestWild = Default