1. Click Options in the Blackbaud NetCommunity Integration Plug-in
2. Verify the URL is the correct path to the PluginService.

For example:

http://yourdomainname.com/PluginService/MasterService.asmx

Or

If Blackbaud NetCommunity and The Raiser's Edge web service are on the same machine:

http://localhost/PluginService/MasterService.asmx