my free licenses has expired.
How can ix take the nes free licenses.
hostid=c855f9ea
ether=0011d87d9300 005345000000
ip=140.120.28.73

Is that possible to use pathfinder any more before the commercial release?

The Pathfinder commercial release was April 14, 2009.  If you''d like to continue using the software, you can purchase a license here:

https://www.thunderheadeng.com/buy.php

If you are a student, interested in using Pathfinder for academic purposes only, you can request a free license under the academic license program.  Please send an email to support@thunderheadeng.com for more information.