There have been several customer reports of glitches with the DVD accompanying MetaMaus. While our internal testing has shown no problems with the DVD, we are now conducting an outside review of the product with an independent quality control firm. If you encounter any problems with the DVD, please let us know and we will send out a replacement DVD immediately. Simply provide us with your mailing address and where you bought your copy of MetaMaus (and please include your computer type and operating system so we are able to share this information with our quality control firm). Write to us via e-mail at pantheon@randomhouse.com.