fluent启动出错是什么原因？

jyy162

本人在启动fluent时出现如下错：
Invalid (inconsistent) license key
The license-key and data for the feature do not match.
This usually happens when a license file has been altered
Feature:       fluent
License path:  D:\fluent.inc\license\license.dat
FLEXlm error:  -8,130
For further information, refer to the FLEXlm End User Manual,
available at "www.globetrotter.com".
Hit return to exit.
请问什么原因？