Problem fixed! XD
It's loading all skins now.
The problem was that some skin's ini-file contained non-ascii chracter
and it didn't load.
and Shine skin
Name=Nylons - visionleague™
and ™ caused the problem
Name=jidé - Julien De Luca - www.jide.fr
and é wasn't loading...
rc notes skin
março as it's month name and I believe the author just translated his skin from Portugues one and didn't bother to change...
So I just removed every non-ascii character and it's working fine.
I guess from now on, whenever I download new skin and if it's not working, I will just check for this problem.