LyX ⇒ Error during compilation

[guest1]

Hi all,
I'm new here, and just beginner with Lyx.
I need to insert a lot of images, about 120. There are 5 different kind of images, repited a lot of times but modifying some numbers and the caption.
What I've tried to do was to insert this 5 images and then copy and past. Then, changing just a few numbers, I'd have my work more or less solved.
But compiling there's a problem, and I don't know what to do to fix this. Could someone help me?
I'm giving you the lyx file and the folder with the images in this zip file. Thank you (and sorry for my bad english).
http://dl.dropbox.com/u/2764664/Resultados.zip

PS, I'm using LyX 2.0

[Juanjo]

Your images are stored in folders whose names contain non-alphabetic characters, accents, etc. Perhaps this is the problem. To check it, just save one image in a folder called, say, «images», write a simple lyx file including this image and try to compile.

[guest1]

I think that's not the problem. When adding one image there's no problem; neither when adding 3. But there's a moment in which adding one more, lyx cannot compile.
In the next file I've deleted some images from the previous file and it can be compiled. But adding just one more picture (whatever) the problem comes back.
http://dl.dropbox.com/u/2764664/Resultados4b.lyx

EDIT: I've detected that the error ocurrs when adding more than 18 floats. Adding 18 or less floats, the compilation can be done. Any suggestion?