fixed missing import.
diff --git a/org.eclipse.swt.examples/META-INF/MANIFEST.MF b/org.eclipse.swt.examples/META-INF/MANIFEST.MF
index 4e63093..936905f 100644
--- a/org.eclipse.swt.examples/META-INF/MANIFEST.MF
+++ b/org.eclipse.swt.examples/META-INF/MANIFEST.MF
@@ -22,6 +22,7 @@
 Bundle-Vendor: Eclipse.org
 Bundle-RequiredExecutionEnvironment: J2SE-1.5
 Import-Package: org.eclipse.core.commands.common,
+ org.eclipse.core.runtime,
  org.eclipse.jface.viewers,
  org.eclipse.swt,
  org.eclipse.swt.accessibility,