wrong extension ...
diff --git a/modeling/plugins/org.eclipse.pde.ds.ui/plugin.xml b/modeling/plugins/org.eclipse.pde.ds.ui/plugin.xml
index 1d113f7..b37181f 100644
--- a/modeling/plugins/org.eclipse.pde.ds.ui/plugin.xml
+++ b/modeling/plugins/org.eclipse.pde.ds.ui/plugin.xml
@@ -7,7 +7,6 @@
             class="org.eclipse.pde.ds.ui.internal.editor.DSEditor"
             contributorClass="org.eclipse.pde.emfforms.editor.EmfActionBarContributor"
             default="true"
-            extensions="numerical"
             filenames="component.xml"
             icon="icons/obj16/ds_obj.gif"
             id="org.eclipse.pde.ds.ui.emf.editor"