I went to the Macrovision site to see if they provided any information that may point to a fix. Unfortunately the only thing their site says that is relevant is that according to their tests their copy protect software is compliant with 99% of cd rom drives. I doubt that is true based on the number of posts in this forum. Anyway Macrovision offers to provide a list of compliant cd rom drives on request. I assume they will only do so for a publisher. Patric would you please request the information and then post so that we can get an idea of what drives need to run this software?