Can't save module after Joomla and maximenu upgrad

please try another module, does it work ?
by my side I tried to create a native joomla menu module and it does not work also, so I think that the problem is not related to Maximenu CK ...

ok i check that thanks for your time i let you know

you were right a 2000 links menu (created with a Jlinker extension) cause that problem, removing both make the modules works again
Best regards
Michel