diff --git a/resources/MatlabInterface/@JEInterface/JEInterface.m b/resources/MatlabInterface/@JEInterface/JEInterface.m
index 2cb304f2..bbd1da31 100644
--- a/resources/MatlabInterface/@JEInterface/JEInterface.m
+++ b/resources/MatlabInterface/@JEInterface/JEInterface.m
@@ -12,9 +12,12 @@ function int = JEInterface(fhandle, datatype, range, varargin)
 %   range: a 2 x dim array defining the solution subspace with lower and
 %      upper bounds; or a scalar defining the bitwidth for binary
 %      problems.
-%   defaultArgs: (optional) additional constant argument to the target
+%   initRange: in analogy to the range: a possibly different range for the
+%       initial solutions. It applies to double and int data types only.
+%       May be set equal to the range. 
+%   defaultArgs: additional constant argument to the target
 %       function, empty by default.
-%   options: (optional) options as name-value pairs defining optimization parameters,
+%   options: options as name-value pairs defining optimization parameters,
 %       especially tolerance and maximum function calls.
 %       Check makeOoptions for default settings.
 %
diff --git a/resources/MatlabInterface/@JEInterface/testEvalFunc.m b/resources/MatlabInterface/@JEInterface/testEvalFunc.m
index 8210c4a9..8b5b1b91 100644
--- a/resources/MatlabInterface/@JEInterface/testEvalFunc.m
+++ b/resources/MatlabInterface/@JEInterface/testEvalFunc.m
@@ -25,16 +25,17 @@ elseif strcmp(int.dataType,eva2.server.go.problems.MatlabProblemDataTypeEnum.typ
     % integer problem
     s=sprintf('Real valued problem in %d dimensions and range %s ', int.dim, mat2str(int.range));
     disp(s);
-    size(int.range)
+    %size(int.range);
     %x=int.range(1,:)+ceil(rand(1,int.dim).*int.range(2,:)-int.range(1,:));
-    x=(int.range(:,1)+ceil(rand(int.dim,1).*int.range(:,2)-int.range(:,1)))';
+    x=(int.range(:,1)+floor(rand(int.dim,1).*(ones(size(int.range(:,2)))+int.range(:,2)-int.range(:,1))))';
 else 
     error('Invalid data type in testEvalFunc.m!'); 
 end
+
 if (isempty(int.range))
-    msg=sprintf('\nTesting value: %d, bin.: %s', x, dec2bin(x, int.dim));
+    msg=sprintf('\nTesting binary string %s', x);
 else
-    msg=sprintf('\nTesting value: %d', x);
+    msg=sprintf('\nTesting value: %s', num2str(x));
 end
 disp(msg);
 
diff --git a/src/eva2/server/go/problems/MatlabEvalMediator.java b/src/eva2/server/go/problems/MatlabEvalMediator.java
index d0f7b031..3fdfa2d2 100644
--- a/src/eva2/server/go/problems/MatlabEvalMediator.java
+++ b/src/eva2/server/go/problems/MatlabEvalMediator.java
@@ -77,7 +77,9 @@ public class MatlabEvalMediator {
 //			Integer.decode()
 //			
 			if (question == null) System.err.println("Error: requesting evaluation for null array!");
-		} else System.err.println("Error, requesting evaluation for non array!"); 
+		} else { // if its not an array, it must be a BitSet
+			if (!(x instanceof BitSet)) System.err.println("Error, requesting evaluation for invalid data type! " + question.getClass()); 
+		}
 //		logMPAndSysOut("Synch requesting A requestEval " + getState());
 		synchronized(requesting) {
 //			logMPAndSysOut(" in synch requesting A requestEval " + getState());
diff --git a/src/eva2/server/go/problems/MatlabProblem.java b/src/eva2/server/go/problems/MatlabProblem.java
index 5abec10b..921de2c9 100644
--- a/src/eva2/server/go/problems/MatlabProblem.java
+++ b/src/eva2/server/go/problems/MatlabProblem.java
@@ -209,7 +209,7 @@ public class MatlabProblem extends AbstractOptimizationProblem implements Interf
 			}
 		} else this.range=null;
 		
-		if (initialRange!=null) { // these may be Matlab objects, so I do it by foot, just to be sure not to clone them within Matlab instead of here
+		if (initRange!=null) { // these may be Matlab objects, so I do it by foot, just to be sure not to clone them within Matlab instead of here
 			this.initialRange = new double[initRange.length][initRange[0].length];
 			for (int i=0; i<this.initialRange.length; i++) {
 				for (int j=0; j<this.initialRange[0].length; j++) this.initialRange[i][j]=initRange[i][j]; 
@@ -217,7 +217,7 @@ public class MatlabProblem extends AbstractOptimizationProblem implements Interf
 		} else this.initialRange=null;
 		
 		if (Arrays.deepEquals(initialRange, range)) initialRange=null;
-		
+
 		dataType=datType; // store the data type
 		log("### Data type is " + dataType);
 
@@ -582,18 +582,23 @@ public class MatlabProblem extends AbstractOptimizationProblem implements Interf
 		log("retrieving initial range..., first entry: " + ((initialRange==null) ? "null" : BeanInspector.toString(initialRange[0])));
 		return initialRange;
 	}
+	
+	public String getName() {
+		return "MatlabProblem";
+	}
 
-	@Override
-	public String[] getAdditionalDataHeader() {
-		return ToolBox.appendArrays(super.getAdditionalDataHeader(), "matlabSol");
-	}
-	@Override
-	public String[] getAdditionalDataInfo() {
-		return ToolBox.appendArrays(super.getAdditionalDataInfo(), "Additional solution representation");
-	}
-	@Override
-	public Object[] getAdditionalDataValue(PopulationInterface pop) {
-		String addStr=((AbstractEAIndividual)pop.getBestIndividual()).getStringRepresentation();
-		return ToolBox.appendArrays(super.getAdditionalDataValue(pop), addStr);
-	}
+//	@Override
+//	public String[] getAdditionalDataHeader() {
+//		return ToolBox.appendArrays(super.getAdditionalDataHeader(), "matlabSol");
+//	}
+//	@Override
+//	public String[] getAdditionalDataInfo() {
+//		return ToolBox.appendArrays(super.getAdditionalDataInfo(), "Additional solution representation");
+//	}
+//	@Override
+//	public Object[] getAdditionalDataValue(PopulationInterface pop) {
+////		String addStr=((AbstractEAIndividual)pop.getBestIndividual()).getStringRepresentation();
+//		String addStr=BeanInspector.toString(pop.getBestIndividual());
+//		return ToolBox.appendArrays(super.getAdditionalDataValue(pop), addStr);
+//	}
 }