First of all Cheak if you loaded the correct layer, then cheak if you have everything viewable cheaked at the top because at the moment you have only objects, wither thou that should show wat you want, just cheak them all to make suer. Also press tab to make the view more viewable, tab is like a freelook mode to breeze orund the world. With everything viewable cheacked, better view, cheaked all layers and cheak if correct layer loaded then move onto this next step. If you are only taking certain files and trying to piece all there picies together in yur world1 folder then stop it imidietly. Just copy the whole workld folder and then remove the stuff you KNOW you dont need, or just leave everything there. This will make modding much easier. Trust me. I stopped doing it peice by peice wen my map almost fell to bits. Hope this helps, i had the same propb. you had. My tree props still show up grey, but there SUPPOSED to. So something m,ite have to show up grey. Hope this helps.

~Dark117