What mode for ghosting are you using? Try setting it just to GHOST OBJECT ON objectnumber if you aren't already. I'm not sure what is wrong yet, but someone might have an idea already.
EDIT: Also, what is your ambient light set to? Have a look at the FADE OBJECT command in place of the COLOR OBJECT command, which basically just fades an object from its maximum brightness to a darker colour, and in my experience works with the ambient light set to 100. The COLOR OBJECT command doesn't work with an ambient light of 100, however.
I am sorry for my not replying to my last thread that asked for help..
I am active now and will try to reply to help!