Is the logo there in Preview mode? It sounds like it's set to non-printing in some way.
Is the logo white over a colored background, perhaps?
how do i change it from preview mode? and also it is a white logo on a black back ground
With no text insertion active you can hit the W key to toggle Preview mode, or use the button on the bottom of the toolbox.
it is a white logo on a black back ground
That's what I suspected. This is a fairly common problem with Illustrator art that started out as Black and was converted to White, and needs to be fixed in Illustrator. Most likely the Black was set to overprint and that carried through to the white on conversion. ID is smart enough to remove the overprint attribute when you do this, but Illy is not.
Right-click on the logo, then choose Edit Original... Does it open in Illustrator? (IF not, waht format is it?) If it does, select anything white and open the Attributes panel, uncheck the Overprint boxes.
White, or [Paper] in ID, is not really a color, but is the absence of color. The way it works is that it knocks out any color behind it, exposing the paper. Overprint means that the current color will print on top of the exisiting color without removing it, and so you are telling ID to put nothing on top of the color, so that's what you see.
i created the file in photoshop,so do the same 'rules' apply that you mentioned above for photoshop as well as illustrator?
No, so let's look at something else. In ID, select the logo, then open the Attibutes panel (Window > Output > Attributes) and clear the Overprint Fill box.
If that's not it, I think I need to see the file to figure out what's going on.
Ive got it working, thank you for your help
Was that it?
yes it was