Can't install new license file

Hello All:

I can't seem to install the new licensekey for Firewall Analyzer. I receive the following message.

Press 1 to provide the User Name and License File path
2 to Exit
Choose an Option :: 1

Enter User Name : username@userdomain.com

Enter The License File path : c:\temp\
ERROR CODE : 507
The license file specified is not valid.
Please contact

AdventNet, Inc.
5645 Gibraltar Drive
Pleasanton, CA 94588 USA
Phone: +1-925-924-9500
Fax : +1-925-924-9600
Email : info@adventnet.com

Press any key to continue . . .

Any assistance would be great. I've tried the full path including the file name as well...same error.