Material Editor Problem

[Geo]

I have recently started to make a skin for Sigma's Battle Rifle, and whenever I try to use it, It shows up tiled on the Material Editor Slot (the ball), instead of wrapping around it. That isn't enough of a problem to bug me, but what is a problem, is that when I try to apply the skin to the model (yes its unwrapped) it just shows up completely black. Then when I try rendering it, it doesn't show up at all, and only the other objects in the scene show, Even with a white render background. Help would appreciated on how to fix this issue, I'm sure I just screwed something up in the Material Editor and don't know how to turn it back.

Note: It does the same for every scene, texturing something else just makes it look tiled 150x 150 or so, and I have to turn off Real Mapping Co-ordinates and set it to tile by 50 to make it look right.


Pictures here:
http://upload.pxspot.com/PX//source/u_20080319131432_issue1.jpg
http://upload.pxspot.com/PX//source/u_20080319131434_issue2.jpg

[kenney001]

uncheck the box that says "real world scale" just a guess.

don't know why its black though....

[JunkfoodMan]

http://img503.imageshack.us/img503/3195/adadadpj4.jpg

Althogh I don't know a permanent fix.
I remember this happening to me a while ago.

[Geo]

Thank you Junkfoodman, your bit really helped. I had to change some other things, but that was the main problem. I can't believe it was that simple.... *slaps himself*