T3 mega menu won't save settings

Hi,

Using Purity III, T3 2.4.9. and Joomla 3.4.3.
Mega menu does not save the settings. It displays the message in backend "Configuration changes saved successfully" but in frontend there is no change.
I see no errors ... so I don't know what to say.

Edit: solved by uninstall and reinstall T3 plugin

Thanks,
Regards
Cosmin