This is pretty much breaking my brain at the moment. I've gone over the codex for installing WP, as well as the Master List and several posts with related issues that I came across, but I can't put the finger on the cause of it.
Downloading update from https://wordpress.org/wordpress-3.7.1-partial-0.zip…
Warning: touch() [function.touch]: Unable to create file /tmp/wordpress-3.tmp because No such file or directory in /home/author21/public_html/wp-admin/includes/file.php on line 155
Warning: unlink(/tmp/wordpress-3.tmp) [function.unlink]: Operation not permitted in /home/author21/public_html/wp-admin/includes/file.php on line 479
Download failed.: Could not open handle for fopen() to /tmp/wordpress-3.tmp
I've gone over the files in question, though I can't see any misconfigurations. I've validated permissions in question, but those are correct as well.
What I do know is that it's not theme related, or plugin related. The issue occurs regardless of theme, and both with and without plugins active (or even installed).
Any suggestions would be more than welcome :/