1 files changed, 5 insertions, 0 deletions
diff --git a/plugins/org.eclipse.emf.cdo.ui/src/org/eclipse/emf/cdo/internal/ui/actions/RegisterCDOPackageAction.java b/plugins/org.eclipse.emf.cdo.ui/src/org/eclipse/emf/cdo/internal/ui/actions/RegisterCDOPackageAction.java
index 66f91e9c91..477c4f044d 100644
--- a/plugins/org.eclipse.emf.cdo.ui/src/org/eclipse/emf/cdo/internal/ui/actions/RegisterCDOPackageAction.java
+++ b/plugins/org.eclipse.emf.cdo.ui/src/org/eclipse/emf/cdo/internal/ui/actions/RegisterCDOPackageAction.java
@@ -63,6 +63,11 @@ public class RegisterCDOPackageAction extends RegisterPackageAction
   {
     public String isValid(String uri)
     {
+      if (uri == null || uri.length() == 0)
+      {
+        return "";
+      }
+
       return registry.containsKey(uri) ? null : "Package " + uri + " not found.";
     }
   }