diff -r 3ce069ec3312 -r b5150a06c5d1 javaquery/api/src/main/java/org/apidesign/bck2brwsr/htmlpage/Knockout.java
--- a/javaquery/api/src/main/java/org/apidesign/bck2brwsr/htmlpage/Knockout.java	Tue Jan 22 21:57:27 2013 +0100
+++ b/javaquery/api/src/main/java/org/apidesign/bck2brwsr/htmlpage/Knockout.java	Tue Jan 22 21:59:13 2013 +0100
@@ -20,7 +20,6 @@
 import java.lang.reflect.Method;
 import org.apidesign.bck2brwsr.core.ExtraJavaScript;
 import org.apidesign.bck2brwsr.core.JavaScriptBody;
-import org.apidesign.bck2brwsr.htmlpage.api.Element;
 
 /** Provides binding between models and 
  *
@@ -51,7 +50,7 @@
                     getter.getReturnType().isPrimitive()
                 );
             } catch (NoSuchMethodException ex) {
-                Element.alert("Error: " + ex.getMessage());
+                throw new IllegalStateException(ex.getMessage());
             }
         }
         applyBindings(bindings);