My wordpress dashboard has displayed
"ERROR: The themes directory is either empty or doesn’t exist. Please check your installation."for the last month or so.
This error is incorrect; the themes directory is not empty and it does exist.
I can't pinpoint what might have prompted this error, but it continues after upgrading from 3.2.1 -> 3.3 and 3.3 -> 3.3.1
wp-config is standard and contains no non-standard values.