cannot delete Nav link on page header

(1) I'm create nav link on page header but I cannot delete it.
When I click delete, It's nothing happen.

(2) I cannot edit register's icon of nav links. When I click submit,
It's the same case of (1)





Ps. sorry for my bad english.

Which ones are you trying to delete?

@SLGray wrote:Which ones are you trying to delete?

The last Nav links. (but I cannot delete all of I was created.)

Ps. I have more problem.

(2) I cannot edit register's icon of nav links. When I click submit,
It's the same case of (1)

Is this happening in all browsers?

Are you trying to change images? If so you need to do so by going to pics management for a few of them.

Go to admin panel --> Display --> Pics Management --> General/Explore

@Forumedic wrote:Are you trying to change images? If so you need to do so by going to pics management for a few of them.

Oh! thank you.
How to delete Nav links of I was created.? I cannot delete it.

Sorry, I can fix it.
I'm close the browser and open agian.
And now, I can delete it.

Thank you everybody so much. It solved.