Ok, here it is
Screen shot 1-
The object that I'm trying to manipulate is highlighted(it's a polygon-lambert).What I want to do is to make it a blin and change its color.At first I was gonna select some faces change their colors (like the shoes) after which I was gonna use the 3d paint tool for the paint details (parts where diferent colors border).

Screen shot 2-
This is what hapens after I right click/ material atributes and change them

* the assign new material doesn't even open
* I get a different error depending on where I click

-right clik on the object (while selected)
Error: Cannot convert data of type int[] to type int.

-right click on the side (while selected)
Error: Object not found: attrEdPopupItem