diff --git a/src/eva2/EvAInfo.java b/src/eva2/EvAInfo.java
index f5b9c3a0..2d50535d 100644
--- a/src/eva2/EvAInfo.java
+++ b/src/eva2/EvAInfo.java
@@ -1,6 +1,6 @@
 package eva2;
 
-import java.io.File;
+import java.io.InputStream;
 import java.util.Properties;
 
 import eva2.tools.BasicResourceLoader;
@@ -100,8 +100,8 @@ public class EvAInfo {
 			System.err.println(ex.getMessage());
 			System.exit(1);
 		}
-		File f=new File(EvAInfo.iconLocation);
-		if (!f.exists()) {
+		InputStream istr = BasicResourceLoader.instance().getStreamFromResourceLocation(EvAInfo.iconLocation);
+		if (istr==null) {
 			throw new RuntimeException(resourceNotFoundErrorMessage(EvAInfo.iconLocation) + " (EvAInfo.static)");
 //			System.exit(2); // dont be as harsh right here - there will be plenty of exceptions later in the bad case...
 		}
diff --git a/src/eva2/server/go/populations/Population.java b/src/eva2/server/go/populations/Population.java
index 7e47ec01..32283fe2 100644
--- a/src/eva2/server/go/populations/Population.java
+++ b/src/eva2/server/go/populations/Population.java
@@ -1676,6 +1676,10 @@ public class Population extends ArrayList implements PopulationInterface, Clonea
 		if (pop.size()<2) {
 			return new double[]{1.,1.,1.,1.};
 		}
+		if (!(pop.getEAIndividual(0) instanceof InterfaceDataTypeDouble)) {
+			EVAERROR.errorMsgOnce("Warning: population correlations can only be calculated for double valued data!");
+			return new double[]{1.,1.,1.,1.};
+		}
 		int index=0;
 		double corsSum=0, minCor = 10., maxCor=-10.;
         for (int i = 0; i < pop.size()-1; i++) {