With the admin pages, I am also getting this error with the CSSmenuWriter files made from the site sculptor process on my localhost, but not on the remote host. This didn't happen before I started to add the new upload capabilities:
Deprecated: Function split() is deprecated in /Users/matthewstuart/Sites/ginnygray/CSSMenuWriter/cssmw/menu.php on line 16
Line 16 is: $WA_ddsArray = split("/", $WA_thisFile);
I have checked the path in the globals file, and it seems correct, and on the basis that the menu is navigating properly, I assume it has nothing to do with that.