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 a60ab0b..864f9a7 100644
--- a/org.ntlab.traceCollector/src/org/ntlab/traceCollector/handlers/InstrumentationHandler.java
+++ b/org.ntlab.traceCollector/src/org/ntlab/traceCollector/handlers/InstrumentationHandler.java
@@ -109,18 +109,19 @@
 				break;
 			case IClasspathEntry.CPE_LIBRARY:
 				// �Ώ�Java�v���W�F�N�g�ɎQ�Ƃ���Ă��郉�C�u����
-				if (entry.getPath().getDevice() != null) {
-					// ���Ԃ�AJRE�V�X�e�����C�u����
-					System.out.println(entry.getPath().toString());
-					cp.appendClassPath(entry.getPath().toString());								
-				} else {
-					URI path = fsm.locationURIFor(workspace.getRoot().getFolder(entry.getPath()));
-					System.out.println(path.getPath());
-					try {
-						cp.appendClassPath(path.getPath().substring(1));
-					} catch (NotFoundException e) {
-						e.printStackTrace();
+				try {
+					if (entry.getPath().getDevice() != null) {
+						// ���Ԃ�AJRE�V�X�e�����C�u����
+						System.out.println(entry.getPath().toString());
+						cp.appendClassPath(entry.getPath().toString());								
+					} else {
+						URI path = fsm.locationURIFor(workspace.getRoot().getFolder(entry.getPath()));
+						System.out.println(path.getPath());
+							cp.appendClassPath(path.getPath().substring(1));
 					}
+				} catch (NotFoundException e) {
+					// ���X�A���炩�̗��R�Ń��C�u�����̃p�X�����‚���Ȃ�
+					e.printStackTrace();
 				}
 				break;
 			case IClasspathEntry.CPE_PROJECT: