Hi Tsvetoslav,
I did run your version but I don't think you understand how I'm dynamically opening windows or using RadSkinManager to set the skin for everything else (I don't want to set the skin on every control as that is the purpose of RadSkinManager isn't it?)
Your code has:
Which really isn't what I'm doing. You are still ineffect hardcoding a radwindow into RadWindowManager (just at the init). Take that code out and create a button that has an "onclick" javascript event to open a RadWindow and I bet you'll see the issue.
I open new RadWindows AFTER the page has loaded using Javascript. i.e. I have datagrids that have an edit link for each row and I open up a unique RadWindow from that link (I don't load up my page with RadWindows... they only load on demand for performance).
I've created a support ticket with a couple of simple versions to show you exactly what I'm doing. I created these from scratch so I know this isn't something with my main site code and it's still a problem. I didn't include Radgrids just a button that uses the basic javascript I use to open a new RadWindow. Again, the standard telerik skin version works correctly but using a custom skin does not.
Hopefully you'll see the problem now.