IsEditable should also handle the situation when no project idea exists, i. e. when the model is null.

src/main/java/se/su/dsv/scipro/project/panels/ProjectIdeaSubmissionPanel.java

@@ -81,12 +81,13 @@ public class ProjectIdeaSubmissionPanel extends Panel {
 	 * 		Identifier for the panel.
 	 * @param user
 	 * 		The current sessions user, the one that wants to submit a project idea.
+     * @param idea
+     *      The project idea, that is submitted
 	 */
 	public ProjectIdeaSubmissionPanel(String id, User user, ProjectIdea idea) {
 		super(id);
 		add(new FeedbackPanel("feedback"));
 		add(new ProjectIdeaForm("projectIdeaForm", user, new Model<ProjectIdea>(idea)));
-
 		dialogSetup();
 	}
 
@@ -509,7 +510,7 @@ public class ProjectIdeaSubmissionPanel extends Panel {
 		 * @return boolean
 		 */
 		private boolean isEditable() {
-            return facade.openApplicationPeriodsExists(ideaModel.getObject().getProjectClass()) && isCreator();
+            return (ideaModel.getObject() == null || facade.openApplicationPeriodsExists(ideaModel.getObject().getProjectClass()) && isCreator());
 		}
 
 		/**