1. Master Your CDC update: An update is currently available for serial numbers between CW0331-XXXXX and CW0335-XXXXX. The update includes new pictures in the Mac workscreen.

Click here to download now!

2.  WINDOWS NT, WINDOWS 2000 and WINDOWS XP: If you run the program with a serial number prior to C0116-XXXXX on Windows NT, Windows 2000, or Windows XP, you may experience one or more of the following error messages:

• Problem copying (CDC/2A551/img2A551, for example).
• It may request an unlock code, even for the first CDC you're installing.
• Read beyond end of file error.
• Unable to copy files when loading.

Click here to download a patch.  Please follow the directions precisely.

3.  Database Corrections:  To check if there are corrections to the questions and answers in your CDC, click here.