4 files changed, 10 insertions, 1 deletions

diff --git a/src/newt/classes/com/jogamp/newt/NewtFactory.java b/src/newt/classes/com/jogamp/newt/NewtFactory.java
index 82f74e370..61dbfb34c 100644
--- a/src/newt/classes/com/jogamp/newt/NewtFactory.java
+++ b/src/newt/classes/com/jogamp/newt/NewtFactory.java
@@ -63,8 +63,8 @@ public class NewtFactory {
             try {
                 clazz = Class.forName(clazzName);
             } catch (Throwable t) {
-                System.err.println("Warning: Failed to find class <"+clazzName+">: "+t.getMessage());
                 if(DEBUG_IMPLEMENTATION) {
+                    System.err.println("Warning: Failed to find class <"+clazzName+">: "+t.getMessage());
                     t.printStackTrace();
                 }
             }
diff --git a/src/newt/classes/jogamp/newt/DisplayImpl.java b/src/newt/classes/jogamp/newt/DisplayImpl.java
index f2f35135a..a0bbcc264 100644
--- a/src/newt/classes/jogamp/newt/DisplayImpl.java
+++ b/src/newt/classes/jogamp/newt/DisplayImpl.java
@@ -70,6 +70,9 @@ public abstract class DisplayImpl extends Display {
                 throw new RuntimeException("Unknown display type \"" + type + "\"");
             }
         }
+        if(null==displayClass) {
+            throw new ClassNotFoundException("Failed to find NEWT Display Class <"+type+".Display>");            
+        }
         return displayClass;
     }
 
diff --git a/src
import java.nio.ByteOrder;

import static com.mbien.opencl.CLException.*;
import static com.mbien.opencl.CL.*;

/**
 * High level abstraction for an OpenCL Kernel.
 * "A kernel is a function declared in a program. A kernel is identified by the __kernel qualifier
 * applied to any function in a program. A kernel object encapsulates the specific __kernel
 * function declared in a program and the argument values to be used when executing this
 * __kernel function."
 * @author Michael Bien
 */
public class CLKernel implements CLResource {

    public final long ID;
    public final String name;
    public final int numArgs;

    private final CLProgram program;
    private final CL cl;

    private int argIndex;

    CLKernel(CLProgram program, long id) {
        this.ID = id;
        this.program = program;
        this.cl = program.context.cl;

        long[] longArray