They will cause installation to fail. Select the Paper registration card option. Enter your serial number. Most installation problems occur because of serial numbers. Mac OS serial numbers only work on Macintosh, and Windows serial numbers on Windows.
Serial numbers are case sensitive.
Click the OK button. Select the products you wish to install. You do not need to install all products that you have purchased at this time. Later you can install the remainder of the products - the installer will recognize that you have installed a valid serial number at an earlier date and allow you to install any or all of the products that your license entitles you to. You can click the disclosure triangle to the left of the product name to reveal more details about the program, or click the i icon for more information.