XML Version Number Question

[Kaylan]

I'm quite the newb when it comes to this skinning so I've muddled my way through by trial and error so far. I've come across an XML error and I was hoping someone could help me with it.

When I updated the skin bar I've done (Kaylan's Scroll Action Bar), I changed the version number from 1.0 to 1.1. It worked for me after at first, but just today it wouldn't show up in the skins option for me. I changed it back to 1.0 and it worked again.

The top line looks like this:
<?xml version="1.0" encoding="UTF-8"?>

The only thing I changed was to the 1.1 from 1.0 and it stopped working. Is there any reason for this? Should I just leave it at 1.0?

Any help or suggestion would be much appreciated. Thanks!