What version - last one.
cache - deleted and even removed. The same error.
One WP installation on GoDaddy (Linux+Apache+php).
One WP on FatCow (Debian+Apache+php).
And one WP on my server (Windows 7.1+Apache+php)
Same error on all.
Disable the WP Config File Editor.
Now you can do the updates. The same on all three system.