### Eclipse Workspace Patch 1.0
#P org.eclipse.jdt.core
Index: model/org/eclipse/jdt/internal/core/ClasspathEntry.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/model/org/eclipse/jdt/internal/core/ClasspathEntry.java,v
retrieving revision 1.126
diff -u -r1.126 ClasspathEntry.java
--- model/org/eclipse/jdt/internal/core/ClasspathEntry.java	25 Oct 2010 10:29:40 -0000	1.126
+++ model/org/eclipse/jdt/internal/core/ClasspathEntry.java	26 Oct 2010 14:12:01 -0000
@@ -2143,7 +2143,7 @@
 		} catch (CoreException e) {
 			if (e.getStatus().getMessage() == Messages.status_IOException) {
 				return new JavaModelStatus(IJavaModelStatusConstants.INVALID_CLASSPATH, Messages.bind(
-						Messages.classpath_illegalLibraryArchive,
+						Messages.classpath_archiveReadError,
 						new String[] {entryPathMsg, project.getElementName()}));
 			}
 		}
Index: model/org/eclipse/jdt/internal/core/util/Messages.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/model/org/eclipse/jdt/internal/core/util/Messages.java,v
retrieving revision 1.28
diff -u -r1.28 Messages.java
--- model/org/eclipse/jdt/internal/core/util/Messages.java	11 Nov 2009 14:35:55 -0000	1.28
+++ model/org/eclipse/jdt/internal/core/util/Messages.java	26 Oct 2010 14:12:01 -0000
@@ -151,6 +151,7 @@
 	public static String classpath_illegalLibraryPath;
 	public static String classpath_illegalLibraryPathInContainer;
 	public static String classpath_illegalLibraryArchive;
+	public static String classpath_archiveReadError;
 	public static String classpath_illegalExternalFolder;
 	public static String classpath_illegalExternalFolderInContainer;
 	public static String classpath_illegalProjectPath;
Index: model/org/eclipse/jdt/internal/core/util/messages.properties
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/model/org/eclipse/jdt/internal/core/util/messages.properties,v
retrieving revision 1.80
diff -u -r1.80 messages.properties
--- model/org/eclipse/jdt/internal/core/util/messages.properties	11 May 2010 18:47:09 -0000	1.80
+++ model/org/eclipse/jdt/internal/core/util/messages.properties	26 Oct 2010 14:12:01 -0000
@@ -147,6 +147,7 @@
 classpath_illegalLibraryPath = Illegal path for required library: ''{0}'' in project ''{1}''
 classpath_illegalLibraryPathInContainer = Illegal path for required library: ''{0}'' in the {1}
 classpath_illegalLibraryArchive = Illegal type of archive for required library: ''{0}'' in project ''{1}''
+classpath_archiveReadError = Archive for required library: ''{0}'' in project ''{1}'' cannot be read or is not a valid ZIP file
 classpath_illegalExternalFolder = Required library cannot denote external folder: ''{0}'' for project ''{1}''
 classpath_illegalExternalFolderInContainer = Required library cannot denote external folder: ''{0}'' in the {1}
 classpath_illegalProjectPath = Illegal path for required project: ''{0}'' in project ''{1}''
#P org.eclipse.jdt.core.tests.model
Index: src/org/eclipse/jdt/core/tests/model/ClasspathTests.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core.tests.model/src/org/eclipse/jdt/core/tests/model/ClasspathTests.java,v
retrieving revision 1.219
diff -u -r1.219 ClasspathTests.java
--- src/org/eclipse/jdt/core/tests/model/ClasspathTests.java	25 Oct 2010 10:30:07 -0000	1.219
+++ src/org/eclipse/jdt/core/tests/model/ClasspathTests.java	26 Oct 2010 14:12:04 -0000
@@ -6882,7 +6882,7 @@
 		createFile("/P/library.jar", "");
 		setClasspath(p, new IClasspathEntry[] { JavaCore.newLibraryEntry(new Path("/P/library.jar"), null,null)});
 		assertMarkers("Expected marker", 
-				"Illegal type of archive for required library: \'library.jar\' in project \'P\'", p);
+				"Archive for required library: \'library.jar\' in project \'P\' cannot be read or is not a valid ZIP file", p);
 		setClasspath(p, new IClasspathEntry[0]);
 		addLibrary(p, "library.jar", null, new String[0], 
 				new String[] {