Hi Eva, thanks for try to help, but the topic that you send is very old. my wordpress is 4.0
But look what i doing here:
I change the name of folder Pluggin for plugin45 and with this i deactivate all plugins.
Wen im back to the menu admin, i try delet and creat menu and WORK!
The problem is:
I have now just the plugins that the theme IDStore use.