diff --git a/org.ntlab.traceCollector/src/org/ntlab/traceCollector/TracerLaunchConfigurationDelegate.java b/org.ntlab.traceCollector/src/org/ntlab/traceCollector/TracerLaunchConfigurationDelegate.java
index b25418c..6a3c161 100644
--- a/org.ntlab.traceCollector/src/org/ntlab/traceCollector/TracerLaunchConfigurationDelegate.java
+++ b/org.ntlab.traceCollector/src/org/ntlab/traceCollector/TracerLaunchConfigurationDelegate.java
@@ -67,9 +67,10 @@
 //			String bundlePath = Activator.getDefault().getBundle().getLocation();
 			try {
 				String bundlePath = FileLocator.resolve(Activator.getDefault().getBundle().getEntry("/")).getPath();
+				String tracerClassPath = FileLocator.resolve(this.getClass().getClassLoader().getResource(Tracer.TRACER_CLASS_PATH)).getPath();
 				classpath = new String[configClasspath.length + 2];
 				System.arraycopy(configClasspath, 0, classpath, 0, configClasspath.length);
-				classpath[configClasspath.length]		= bundlePath.substring(1) + "bin/";
+				classpath[configClasspath.length]		= tracerClassPath.substring(1, tracerClassPath.length() - Tracer.TRACER_CLASS_PATH.length());
 				classpath[configClasspath.length + 1]	= bundlePath.substring(1) + Tracer.JAVASSIST_LIBRARY;
 			} catch (IOException e) {
 				classpath = configClasspath;
diff --git a/org.ntlab.traceCollector/src/org/ntlab/traceCollector/handlers/InstrumentationHandler.java b/org.ntlab.traceCollector/src/org/ntlab/traceCollector/handlers/InstrumentationHandler.java
index b7c1cc3..ba3dc45 100644
--- a/org.ntlab.traceCollector/src/org/ntlab/traceCollector/handlers/InstrumentationHandler.java
+++ b/org.ntlab.traceCollector/src/org/ntlab/traceCollector/handlers/InstrumentationHandler.java
@@ -42,7 +42,8 @@
 //					String bundlePath = Activator.getDefault().getBundle().getLocation();
 					try {
 						String bundlePath = FileLocator.resolve(Activator.getDefault().getBundle().getEntry("/")).getPath();
-						cp.appendClassPath(bundlePath.substring(1) + "bin/");
+						String tracerClassPath = FileLocator.resolve(this.getClass().getClassLoader().getResource(Tracer.TRACER_CLASS_PATH)).getPath();
+						cp.appendClassPath(tracerClassPath.substring(1, tracerClassPath.length() - Tracer.TRACER_CLASS_PATH.length()));
 						cp.appendClassPath(bundlePath.substring(1) + Tracer.JAVASSIST_LIBRARY);
 					} catch (IOException e) {
 						e.printStackTrace();
diff --git a/org.ntlab.traceCollector/src/org/ntlab/traceCollector/tracer/Tracer.java b/org.ntlab.traceCollector/src/org/ntlab/traceCollector/tracer/Tracer.java
index 7693af3..03f8812 100644
--- a/org.ntlab.traceCollector/src/org/ntlab/traceCollector/tracer/Tracer.java
+++ b/org.ntlab.traceCollector/src/org/ntlab/traceCollector/tracer/Tracer.java
@@ -35,6 +35,7 @@
 public class Tracer {
 	public static int lineNo = 1;
 	public static final String TRACER = "org.ntlab.traceCollector.tracer.";
+	public static final String TRACER_CLASS_PATH = "org/ntlab/traceCollector/tracer/Tracer.class";
 	public static final String JAVASSIST_LIBRARY = "javassist.jar";
 	private static final String STANDARD_CLASSES = "java.util.ListIterator|java.util.Iterator|java.util.List|java.util.Vector|java.util.ArrayList|java.util.Stack|java.util.Map|java.util.HashMap|java.util.Set|java.util.HashSet|java.util.Hashtable|java.util.LinkedList|java.lang.Thread";
 	private static final String CONCRETE_STANDARD_CLASSES = "java.util.Vector|java.util.ArrayList|java.util.Stack|java.util.HashMap|java.util.HashSet|java.util.Hashtable|java.util.LinkedList|java.lang.Thread";