Thanks a lot, it is now working:
1) I downloaded the war file: essential_viewer-6.5.5
2) Renamed it to "essential_viewer.war" - it was after I deployed it as-is and I still had the problem
3) Deployed and tested from both Tomcat & Protege

I "newbie" am getting the following error when attempting to publish the default project "essential_baseline_6.5.4.pprj": "Essential Viewer ReportService could not be found at this URL" I have deployed the Essential Viewer on Tomcat 9 at port 8080 and Essential Import U...