The IPS license file is keyed to the sensor's serial number.
It looks like you got the wrong license file. You could confirm by getting a one-time-only 60 day trial license for the sensor and see if it installs properly (you might not want to burn this one time only offer on a test though). Either way, if you paid for a license and it isn't working, you should contact your Cisco Rep to have them straighten this out.
- Bob
