Luminator acting weird (placing)

  • Hello, this is my first thread in here. I was looking into Industrialcraft since the start of it and no problems. But now I have literally no idea why my luminators wont work. I simply cannot place them correctly on cables (tried from all sides and this ONLY works from BOTTOM (as in the screenshot). If I try this on any other side I get the same result as on screenshot (the top one luminator). I tried with CF and without it, on cables, on blocks, etc.
    I know for a fact that u can simply build a floor of luminators and tried to do it again(I did it few versions ago without problems) but now I can not. I would like to ask for assistance and help with this problem.
    Thanks.
    The screenshot:
    http://img706.imageshack.us/img706/5449/20121228021636.png