Page with calender/form does not load after update 5.0

After installing upgrade 5.0 the page of our website with the calender/form does not load completely. Removing the shortcode of the form the page loads again (only with the calender and without the reservation module ofcourse!).

Short code creator works neither.

Please could you help.

Please a link to the page.
Can you reproduce it on the demo?
http://demo.easyreservations.org/
Regards