*Bumpty-dy-bump*
Time to remind people of this, again. 
Check, doublecheck and re-check your files before uploading.
That goes for the WindowBlinds skinners, especially if you've built you skin based on another skin.
It is imparative that you make sure that no files from the base skin are zipped along when packing up the skin.
Secondly, and this goes for everytime anyone of you zip a WB for uploading; remove any and all temp files that are in the archive, and they ARE there!
They can cause the skin to not install properly or not apply properly - we've seen it so friggin many times.
What files to look out for: Any file with '~' in the extension. Eks: "ShellStyle.xps~" - "skinname.uis~" and all "*.wb4" as well.
Take special care to remove the .uis~. It's a down right focker.
We've seen it many times that the .uis~ file is named differently from the actual .uis - 'askin.uis' and 'anotherskin.uis~' and that appears to cause all sorts of havoc when installing/applying the skin.
So, please do this every time. It makes life so much easier for us (the mods), and the users.
(Dunno why SKS does this..... I bet Neil just wanna make our lives miserable)
One other thing. Please don't re-zip .wba files. It's nonsense and a waste of time, both for the mods and those who download your skins.
If you have some extra files that goes with the skin like permission texts, wallpapers etc etc, just slap'em inside the .wba.
