remaining encodings

I have registered Cu LE 5 which came with my Tascam audio/midi interface. I have activated whatever I can and have made licenses permanent. I have codes and license numbers coming out of my ears. However, whenever I export a file it gives message"until … March 2013, you have 16 remaining encodings" with the number reducing each time I use it. The software does what I need but setting up the licenses was very messy. Is there a cure for this count down?