Since I have Multiselect disabled I modified the code to look at value instead of values and it works fine...Thanks

function WebScheduler1_OnEditingFormSave(controlId, action, eventView)
        {
            var s = ISGetObject(controlId);
            var editWindow = s.GetEditingFormWindow();
            var wcCategories = editWindow.ISGetObject("wcCategories");
            if (wcCategories.Value == "")
            {
                alert("Categories can not be Empty");
                return false
            } else
            {

                return true;
            }
        }

I just did some testing with the MultipleSelectionSettings disabled as you described above and here is what I found:

1. If you don't remove the SeparatorChar property from the wcCategories webcombo then everytime you save the edit form the CategoryID field will append the separator character to the CategoryID and will continue each time you save. (3,,,,,,). When I removed the SeparatorChar property it works fine.
2. After you disable the MultipleSelectionSettings on the wcCategories webcombo the CategoryID is no longer saved to the RecurringEvents table when you edit an existing recurring event or when you create a new recurring event. I have attached a sample of this issue.

Please let me know how to fix #2.

Thanks,

Tim

Thanks. When will the official hotfix be available to everyone?