Irender Dialog Boxs not loading any image...

Hi guys,

I'm hoping someone can help me! I have a file that I rendered with only a few lights a week ago.. after letting it go through and couple passes I stopped it and added more lights. When I did this I also clicked on lighting fixtures I had dropped into my space and clicked "treat object as light". I also purged the file because it was pretty large and ever since these minor changes every time I go to render it takes forever for the Irender dialog box to pop up and when it does it can load for hours and no image ever pops up. I have rendered other models and they work fine it is only this one model and it's becoming very frustrating. I have even tried copying and pasting everything into a new sketch-up, saving it as a new file name and trying from the new file - still won't work. The file size is 79,000 KB. My other files are larger and have no problem rendering with tons of lights so I'm really confused here.

If someone can please give me some advice or will offer to try and render it for me that'd be great. I've resorted to taking all of the lights out and it still won't render!

I have attached the first and only rendering I have of the model...bad rendering