DS fields not working in Views Displays

I created some custom DS fields (code field, block field, dynamic field) that works fine when I use it for "content displays" (node display). For example, I can show the content of a node in the left column, and the results of a view in the right column (with a custom DS block field).

The problem is when I try to use these fields in a "Views displays". For example I try to show the results of a main view in left column, and some stuff in the right column (other views, and some content) using those same custom DS fields (code field, block field, dynamic field), but in this case it doesn't work, the sistem prints "Array" for each field I try to show.

It's a bug?
Am I missing some step?

thx