Licensing problem

Licensing problem

Hi all,
I'm able to successfully install Zenon 6.22 SP1 but the dongle licensing isn't working. When I enter the Serial Number and Activation key it prompts me with the message:
'The entered license information isn't valid. Please enter the two numbers exactly, as they are on you license sticker. Care for case sensitivity.'
Now, the same licensing is valid on any other PC where I install the software and put the same serial number and activation key. Keep note of the fact that all the computers are running the same windows and are with the same specification.
Help me out please :-|

This is a migrated post! Originally posted on 19.11.2009 by user shikra. Please be aware that information can be outdated.