I'm having all my servers upgraded to ColdFusion 9. In the process we ran into a situation where a perfectly valid key was not accepted by the ColdFusion installer.
The serial number that you entered is invalid
When installing ColdFusion 9 Standard onto a Linux operating system, you may encounter the issue where the installer does not accept the serial number. When you enter the number into the installer, you will receive a message similar to the following:Read More
* The message 'The serial number that you entered is invalid' * A red cross will appear next to the Serial Number text field
The installer will not let you progress any further.
Apparently, proceeding with the developer installation, then entering the license key in later fixes the issue. I'm sure this will be remedied in a future point release of ColdFusion.