Index: dbLearnStar-webApp/src/main/java/dblearnstar/webapp/pages/SolutionComparatorPage.java
===================================================================
--- dbLearnStar-webApp/src/main/java/dblearnstar/webapp/pages/SolutionComparatorPage.java	(revision c7ebbc690077e9bf87bfbe9428c6ba7152410072)
+++ dbLearnStar-webApp/src/main/java/dblearnstar/webapp/pages/SolutionComparatorPage.java	(revision 8b3facbcfce9682dae01f15deb4e2ed753178b06)
@@ -178,5 +178,5 @@
 			return sss.getTaskInTestInstance().getStudentSubmitSolutions().stream()
 					.filter(p -> (p.getEvaluations() != null && p.getEvaluations().size() > 0
-							&& p.getEvaluations().get(0).getPassed()
+							&& p.getEvaluations().get(0).getPassed()!=null && p.getEvaluations().get(0).getPassed()
 							&& p.getStudentSubmitSolutionId() != sss.getStudentSubmitSolutionId()))
 					.collect(Collectors.toList());
Index: dbLearnStar-webApp/src/main/java/dblearnstar/webapp/pages/admin/GroupManagement.java
===================================================================
--- dbLearnStar-webApp/src/main/java/dblearnstar/webapp/pages/admin/GroupManagement.java	(revision c7ebbc690077e9bf87bfbe9428c6ba7152410072)
+++ dbLearnStar-webApp/src/main/java/dblearnstar/webapp/pages/admin/GroupManagement.java	(revision 8b3facbcfce9682dae01f15deb4e2ed753178b06)
@@ -26,5 +26,4 @@
 import org.apache.tapestry5.annotations.Persist;
 import org.apache.tapestry5.annotations.Property;
-import org.apache.tapestry5.beaneditor.RelativePosition;
 import org.apache.tapestry5.beanmodel.BeanModel;
 import org.apache.tapestry5.beanmodel.services.BeanModelSource;
@@ -33,5 +32,4 @@
 import org.apache.tapestry5.hibernate.annotations.CommitAfter;
 import org.apache.tapestry5.ioc.annotations.Inject;
-import org.apache.tapestry5.services.ComponentSource;
 import org.apache.tapestry5.services.SelectModelFactory;
 import org.slf4j.Logger;
@@ -42,6 +40,4 @@
 import dblearnstar.model.entities.Person;
 import dblearnstar.model.entities.Student;
-import dblearnstar.model.entities.StudentSubmitSolution;
-import dblearnstar.model.model.ModelConstants;
 import dblearnstar.webapp.annotations.AdministratorPage;
 import dblearnstar.webapp.model.StudentSelectModel;
Index: dbLearnStar-webApp/src/main/java/dblearnstar/webapp/pages/admin/TranslationPage.java
===================================================================
--- dbLearnStar-webApp/src/main/java/dblearnstar/webapp/pages/admin/TranslationPage.java	(revision c7ebbc690077e9bf87bfbe9428c6ba7152410072)
+++ dbLearnStar-webApp/src/main/java/dblearnstar/webapp/pages/admin/TranslationPage.java	(revision 8b3facbcfce9682dae01f15deb4e2ed753178b06)
@@ -15,4 +15,5 @@
 import dblearnstar.webapp.services.GenericService;
 import dblearnstar.webapp.services.TranslationService;
+import dblearnstar.webapp.services.UsefulMethods;
 
 @AdministratorPage
@@ -38,5 +39,5 @@
 
 	public List<Translation> getListTranslations() {
-		List<Translation> l = (List<Translation>) genericService.getAll(Translation.class);
+		List<Translation> l = UsefulMethods.castList(Translation.class, genericService.getAll(Translation.class));
 		if (filter != null && filter.length() > 0) {
 			for (String filterWord : filter.split(" ")) {
Index: dbLearnStar-webApp/src/test/conf/webdefault.xml
===================================================================
--- dbLearnStar-webApp/src/test/conf/webdefault.xml	(revision c7ebbc690077e9bf87bfbe9428c6ba7152410072)
+++ dbLearnStar-webApp/src/test/conf/webdefault.xml	(revision 8b3facbcfce9682dae01f15deb4e2ed753178b06)
@@ -1,14 +1,14 @@
 <?xml version="1.0" encoding="ISO-8859-1"?>
 <web-app
-        xmlns="http://java.sun.com/xml/ns/j2ee"
+        xmlns = "http://Java.sun.com/xml/ns/j2ee" 
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
         version="2.4">
 
-    <description>
+<!--     <description>
         Default web.xml file.
         This file is applied to a Web application before it's own WEB_INF/web.xml file
     </description>
-
+ -->
 
     <!-- ==================================================================== -->