Hi I have just updated my environment here to UserApp 4.5.4. Now all my workflows where I have a date type field with an datepicker control will not run anymore. As soon as I start them, The form is loaded and I get the following error: Unrecoverable error during asynchronous call (_d.datepicker is not a function) I thought it might be a problem with some onload code. But even as I removed the onload event, I still get the error. Found some hints in the forum - but did not work (was for HPD and datepicker) UserApp is running on W2012 R2