Improved error handling

src/de/tud/kom/p2psim/impl/util/guirunner/impl/XMLConfigFile.java

@@ -37,6 +37,7 @@ import javax.xml.parsers.DocumentBuilderFactory;
 import org.w3c.dom.Document;
 import org.w3c.dom.Element;
 
+import de.tud.kom.p2psim.api.scenario.ConfigurationException;
 import de.tud.kom.p2psim.impl.util.Tuple;
 import de.tud.kom.p2psim.impl.util.toolkits.DOMToolkit;
 
@@ -121,9 +122,13 @@ public class XMLConfigFile implements ConfigFile {
 			try {
 				parseContent();
 				parsed = true;
+			} catch (ConfigFileException e) {
+				log("Invalid configuration for starting a scenario. Pleae choose a different one!");
+				parsed = true;
+			} catch (RuntimeException e) {
+				throw e;
 			} catch (Exception e) {
 				log("Problems while parsing. Will not retry.");
-				e.printStackTrace();
 				parsed = true;
 			}
 		}