I have been having the same problem with the last 3 times I have tried to activate the software downloads... Plato, Bee Icons, Wondershare Demo Creator.
BTW.. I'm running WinXP Pro.. NOT Vista.
All these downloads use the combined Activate/Install icon in the .zip.. where you get an activation code that you can paste into the Registration of the program after install is complete.
The older method of Activate BEFORE install never gave me a problem.. and I have used this newer dual method before successfully in the past.
But Now.. EVERY time I try to Activate/Install.. I get the same Error.. I click on Icon.. I have a small box open that says that the software is connectting to internet, (Zone Alarm advises me of the connection attempt and I approve it) and then I immediately get the small error Box "Fatal error: Key is Invalid".
Then the installation process stops !!!! No install is completed.
I have tried downloading from the main site, and from the mirrirs.. same problem.
This is getting VERY FRUSTRATING... and I'm about to give up on this site.. No point in Coming here everyday and downloading if I can never Activate.
I hope someone can HELP... PLEASE!!!!!.
CS