Dear scdesign,
First I would like to suggest to update your CodeMeter driver to version 4.30c from here:
http://www.graphisoft.com/support/archicad/downloads/WIBU.html if you have an older one.
Uninstalling the wibu driver would probably solve the problem but in case you still need to use AC 15 this way please try the following:
1. Start WkConfig application and on Client tab remove the tick before Local (if there was)
2. Start CodeMeter Control Center to open WebAdmin. On Configuration/Network tab add 'localhost' to the Server Search List and apply this setting.
3. If the error message still appears in WkConfig remove the tick from WkLAN as well. When you want to use AC 15 you have to set this back. Hopefully this will solve the problem.
Kind regards,