Hate to ask but....

[And1Legend21]

I hate to keep asking about problems I have but I have no idea what they mean sooo. Can any one tell me what this message means? and how to fix it.

[dmn]

One of your objects is messy.

Find the object by rendering the scene in halves. If one half renders fine, then it doesn't have any bad objects in it. If it does, then split that in half again, until you have determined which objects are causing the problem.

To Fix it:

message in indigo is usually an indicator of 'doubles' in the blender mesh
-you should remove doubles where ever you get that warning as a first solution - it usually fixes it
-sometimes it happens because the modelling is otherwise 'unusual' - your wall window could be a candidate.
get into the habit of 'removing doubles' and 'applying scale and rotation' in your scene preparation

I havent looked to see how smartden has changed his script code lately but the material index error probably is related to having a mesh in blender with multiple materials assigned
In this case to fix it I just separated the parts of the mesh according to material -ie its not the size thats the issue...
You can do this in edit mode using the 'link and materials' panel to select the vertices with the same material then shortcut "P"

original post

[And1Legend21]

Thanks! few of my objects had like 5 materials on it