CLM 6.0.2 theme is not working

I downloaded the custom html example theme ("customHTMLExample.zip"). When I deploy this example template, it deployes fine (result as described in https://jazz.net/wiki/bin/view/Main/WebUITheming#Uploading_a_New_Theme).
Next, i copied the theme to devtheme, changed the aboveBanner.html (<div class="custom-html-example">TEST TEST TEST</div>), and zipped all to DevTheme.zip.
I would expect that after uploading the new Theme, the banner would show TEST TEST TEST . But, I seems that the hole theme is not deployed as the unchanged parts in the custom html example theme are missing too...
There are absolutelly no other modifications.
Hope someone can help.