Unable to open workflow in Designer 2007

Recently tried a STSADM export / import to move a site to a new collection.  After the STSADM import I tried to open a workflow using SharePoint Designer and received the following error.

The server could not complete your request. Contact your internet service provider or Web server administrator to make sure that the server has the Frontpage Server Extensions or SharePoint Services installed.

The fix was to recycle or restart the SharePoint server.