diff -r 6f147580f5cc src/org/openbravo/module/resources/calendar/ResourcesCalendarDataService.java
--- a/src/org/openbravo/module/resources/calendar/ResourcesCalendarDataService.java	Thu Nov 05 09:58:43 2015 +0100
+++ b/src/org/openbravo/module/resources/calendar/ResourcesCalendarDataService.java	Thu Nov 05 12:41:12 2015 +0100
@@ -56,6 +56,9 @@
   @Override
   protected List<BaseOBObject> bobFetchTransformation(List<BaseOBObject> bobs,
       Map<String, String> parameters) {
+    if (true) {
+      throw new java.lang.RuntimeException("something went wrong!!");
+    }
     List<BaseOBObject> newBobs = bobs;
     newBobs = ReservationUtilities.splitReservationInAvailableHours(newBobs, parameters);
     newBobs = ReservationUtilities.splitReservationInDays(newBobs, parameters);