Have been using the Avid DVD interface without any issues and out of the blue - today - a Sonic 'activate a feature required box' pops up during launch so following the buttons I connect to the so called server and I get the prompt Invalid serial number and the program closes. Did a complete deinstall , shut down, fresh download from my products at Avid.com double checked and entered my activation serial number - reloaded this restarted the progtam and exactly the same result. .... Jobs to do ! Have used this version of the product for at least 35 DVD compiles without any issues whats so ever. Thanking you in advance for your thoughts and suggestions .......