Hi ,
first , thanx to have taken the time to answer 😄 I appreciate, really.
Next , I found the solution. I had a doubt seeing all the processes on my computer. And knowing my scene, that was not a poly number problem.
I remembered a thread were it was talking about the maximum size of the texture.
And that was the problem. I used 12000²px texture sized. Sketchup itself could'nt have threat such an info.
I resized the texture , and it worked.
So that was a texture size error. Working normally on big softawre like 3DS MAX , etc , I use to make big sized textures. So that was my fault.
Thanx a lot anyway for the anwser. And really good job for your software. Some lights artefacts problems persist, but globally it's a good job 😄