I'm sure that this is probably something really simple... but here goes. I'm trying to add a servlet filter to an existing (working) deployment just to see how servlet filters are deployed in Orion; however, after adding my filter I'm getting the below error when going to my deployment url at localhost:8888/testapp "Error instantiating web-application Error initializing testapp-war, Filter Servlet 'DebugFilter1' not found" The above url should be going to a simple login.jsp page. Inside of ../application-deployments/testapp/testapp-war/ My orion-web.xml looks like: <orion-web-app deployment-version="1.0.2.2" jsp-cache-directory="./persistence" temporary-directory="./temp" servlet-webdir="/servlet/"> <servlet-filter url-pattern="*.jsp" servlet-name="DebugFilter1" /> </orion-web-app> The servlet class is compiled and located at ../applications/testapp/testapp-war/WEB-INF/classes/ and is also found inside of the non-extracted war file of my ear file. My web.xml from ../applications/testapp/testapp-war/WEB-INF/ looks like: <web-app> <servlet> <servlet-name>DebugFilter1</servlet-name> <servlet-class>example.DebugFilter1</servlet-class> </servlet> <servlet-mapping> <servlet-name>DebugFilter1</servlet-name> <url-pattern>*.jsp</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>login.jsp</welcome-file> </welcome-file-list> </web-app> I have the following entry in my server.xml <application name="testapp" path="../applications/testapp.ear" auto-start="true" /> and the following entry in my default-web-site.xml <web-app application="testapp" name="testapp-war" root="/testapp" /> In receiving the error.. the Orion console is not printing anything.. and ../application-deployments/testapp/application.txt doesn't print anything. When I remove the <servlet-filter .../> line from orion-web.xml my login.jsp page does load, but the filter doesn't appear to get applied. I say that it does not appear to be getting applied in this scenario as my filter should be doing a standard out print in the core Filter methods that I'm implementing. What am I missing here?