diff --git a/com.google.eclipse.protobuf/.classpath b/com.google.eclipse.protobuf/.classpath
index a376b7c..e29f56c 100644
--- a/com.google.eclipse.protobuf/.classpath
+++ b/com.google.eclipse.protobuf/.classpath
@@ -1,7 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
 	<classpathentry kind="src" path="src"/>
-	<classpathentry kind="src" path="src-gen"/>
+	<classpathentry kind="src" path="src-gen">
+		<attributes>
+			<attribute name="ignore_optional_problems" value="true"/>
+		</attributes>
+	</classpathentry>
 	<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.6"/>
 	<classpathentry kind="output" path="bin"/>
diff --git a/update-site/artifacts.jar b/update-site/artifacts.jar
deleted file mode 100644
index 2d196d6..0000000
--- a/update-site/artifacts.jar
+++ /dev/null
Binary files differ
diff --git a/update-site/content.jar b/update-site/content.jar
deleted file mode 100644
index f966f8c..0000000
--- a/update-site/content.jar
+++ /dev/null
Binary files differ
diff --git a/update-site/features/com.google.eclipse.protobuf_1.2.3.201203050215.jar b/update-site/features/com.google.eclipse.protobuf_1.2.3.201203050215.jar
deleted file mode 100644
index b458bd2..0000000
--- a/update-site/features/com.google.eclipse.protobuf_1.2.3.201203050215.jar
+++ /dev/null
Binary files differ
diff --git a/update-site/plugins/com.google.eclipse.protobuf.ui_1.2.3.201203050215.jar b/update-site/plugins/com.google.eclipse.protobuf.ui_1.2.3.201203050215.jar
deleted file mode 100644
index 485fc94..0000000
--- a/update-site/plugins/com.google.eclipse.protobuf.ui_1.2.3.201203050215.jar
+++ /dev/null
Binary files differ
diff --git a/update-site/plugins/com.google.eclipse.protobuf_1.2.3.201203050215.jar b/update-site/plugins/com.google.eclipse.protobuf_1.2.3.201203050215.jar
deleted file mode 100644
index f73704f..0000000
--- a/update-site/plugins/com.google.eclipse.protobuf_1.2.3.201203050215.jar
+++ /dev/null
Binary files differ