Fail Photo Background Column

Hi there everyone! I am modifying my website and when I tried to change he background photo of a column the BB did not respond and when moving the mouse to the button of selecting a photo it appears a message like this on the left down corner-> javascript:(0);
I do not have any idea of why this is happening. The only thing that can be related is that in the columns I used to have a photo that I deleted from my wordpress without deleting it first from the columns, I do not know if that has something to do with it. But eitherway when I try to add a background photo to a new column it does not give me the optin too.