Can't start Kiwi Syslog Service - Logon Failure

After installing the permanent license for Kiwi Syslog server the Syslog service will not start.  It started without problems when running as the trial version.  No errors appear in the Kiwi Syslog error log, but the Windows event viewer shows the following error:

The Kiwi Syslog Server service failed to start due to the following error: The service did not start due to a logon failure.

I can't find anything in the Kiwi Syslog documentation about having to login.  The OS is Windows 2008 R2.  I am starting the Syslog service from Service Manager > Manage, and Service Manager was Run As Administrator.

Is this a known problem?

Thanks, Glenn