Minor tweaks

src/eva2/server/go/strategies/CBNPSO.java

@@ -195,6 +195,14 @@ public class CBNPSO extends ClusterBasedNichingEA implements Serializable {
 		return ToolBox.appendArrays(super.getAdditionalDataHeader(), addVals);
 	}
 
+	@Override	
+	public String[] getAdditionalDataInfo() {
+		String[] addVals = {"Ratio of interesting solutions within all archived solutions"};
+		if (getCurrentPeriod()>=0) addVals = new String[]{"Ratio of interesting solutions within all archived solutions", 
+				"Current sigma adaptation period"}; 
+		return ToolBox.appendArrays(super.getAdditionalDataInfo(), addVals);
+	}
+	
 	/**
 	 * Retrieve the current period of the sinusoidal sigma adaption (in case it is controlled by a threshold adaption)
 	 * or -1 if this does not apply.

src/eva2/server/stat/EvAJobList.java

@@ -120,11 +120,13 @@ public class EvAJobList extends PropertySelectableList<EvAJob> implements Serial
 				File sFile = fc.getSelectedFile();
 				if (sFile.exists()) {
 					for (EvAJob job : selected) {
+						if (job!=null) {
 							if (!FileTools.saveObjectToFolder(job, sFile, false, parentComponent)) {
 								System.err.println("Error on saving jobs...");
 								return false;
 							}
 						}
+					}
 				} else return false; // invalid folder chosen
 			} else return false; // user break
 		}