Created Unassigned: version 7.1213 doesn't load correctly in production [27617]

since i upgraded from 7.1005 to 7.1213, this error appears in chrome log :
Uncaught TypeError: undefined is not a function

some function doesn't work anymore like ConfirmButtonExtender or ModalPopupExtender

All works fine in visual studio but not when published in iis on the production server.