Problems with Split View

Dear all,

after upgrade to El Capitan on my Mac Book Pro (retina), I tried Split View, but it didn't work. After I tried creating a new account and when I logged in with the new one Split View worked normally.

In the old account I restored all the preferences, I eliminated all the login launch agents, I emptied the caches, but all was unuseful: Split view still don't works.

Is there someone that had the same problem? Someone knows which program, preference or something else locks this utility?

All the best

Teo

Message was edited by: Teopaoli