Erros trying to add content

People, where do I set the default item for this menu?

hello i try to understand first screenshot but with last update all is good no message
=> to select specific type on creation link change type option in menu link => change 'allow type via ACL' for a specific type in select list

Thanks Micker! I found it. But what happening is:
- When I use ACL, there is a button to apply type. When I use it, all the fields I created for specific type changes.
- When I select one specifi (no ACL), this button disappear. And when I change the type, the fields doesnt change. Is there a document that explain how to configure this?

hello please update to last beta via link sended by georgios and redo your test

Thanks people. Error messages just stop appearing after update.

But I notice that buton "Save" appears 2 times (see below).

 

think to edit global configuration and in item form you can select button to display
you didn't have 2 same button its just a translation button error (one is apply and other save )