Empty playlist after update
 

I have just started using Free Winamp on my Motorola Droid X2. I was trying it out before purchasing the Pro version. I created several playlist and everything was going fine until I got a notification of an update for Winamp. I updated the app to a 1.2.12 version and now when I open playlist they are all empty. What happened to my playlist. The playlist titles are there they just don't show any songs in the list. I spent a lot of time creating the list. How can I retrieve them?