I get the error 'DBU Access Denied' when I attempt to add a license with the License Administrator.
This error is caused when you are connected to the server via a Windows Terminal Server session.
Apply user count licenses at the server.
Additional note: Rarely, this can happen even though you are absolutely sure that you are logged in as Administrator directly on the server. One workaround could be to run the License Administrator on a workstation, connect to the server engine remotely with the Administrator login, and apply the key from there. This has been known to work.
Another Additional note: You might be able to get this to work by running the License Key Administrator from a console session under Remote Desktop.
Yet Another Additional Note: Pervasive has made sure that v10 "Summit" is much more tightly integrated with Terminal Services and Citrix and performs much better in those environments. Please consider upgrading to Pervasive.SQL v10
Still Yet Another Additional Note:You may be logged in as THE Administrator but still get this or a similar error, if you are not physically at the server console and are connected via a TS connection. If that's the case, edit the following registry key: "HKEY_Local_Machine\Software\Pervasive Software\Utilities Interface\Settings\Restricted Access On WTS client" and turn it off. You will then need to re-login as Administrator and you will have true full Administrator rights.