[问题]vmware出现的这种错误应该如何解决？

[mrpie]

Unable to change virtual machine power state: This product has expired and your virtual machine cannot be powered on.
Be sure that your host machine's date and time are set correctly.

There is a more recent version available at the VMware Workstation Web site: http://www.vmware.com/info?id=4.

[chasye]

输入了序列号没有啊？？