Hi computerbar
See this post in Spanish, I think it's the same problem.
http://forums.osclass.org/ayuda/en-administrador-escritorio-en-blanco/
Chofi
thanks it worked
translation from above post
Let's try something I do not know if it will work.
Rename the file to jquery_galleta.js oc-admin/themes/modern/js/jquery.cookie.js
Then in oc-admin/themes/modern/head.php on line 38
change of
<script type = "text / javascript" src = "<? osc_current_admin_theme_js_url php echo ('jquery.cookie.js');?>"> </ script>
to this another
<script type = "text / javascript" src = "<? osc_current_admin_theme_js_url php echo ('jquery_galleta.js');?>"> </ script>
I hope that this is resolved, the only downside is that every time you update you will have to make these ccambios hand until we find a solution to the problem.