I'm trying to update to version 3.8.1 and am getting this message:
"The update cannot be installed because we will be unable to copy some files. This is usually due to inconsistent file permissions.: wp-admin/includes/update-core.php"
What I have done to try and remedy this is: change file permissions of the wp-admin/includes/update-core.php file to 644. I've done this by following the file path to the file in the remote site pane of my FTP (filezilla) and right clicking on it, then selecting file permissions from the dropdown and changing and changing numeric value to 644. I have deactivated plug ins, cleared cache and upgraded my theme (SPUN) to the latest version (not sure I needed to do that, but was trying everything I could think of to help).
I'd be grateful for any suggestions please.