I just upgraded from 7.0.2 to 7.1, and thought I would point out a problem -- hope it helps others.

The process updates files or creates files in the /languages and languages/english folders, yet the permissions on my site were not set to allow it.

I only recently installed 7.0.2 from scratch and followed the install instructions. However, in the section "Set File & Directory Permissions", it does NOT specify that these folders or files' permissions should be changed.

It caused me a bit of head-scratching, but once I set the permissions to enable write access, the upgrade continued.

It would be nice if the initial install instructions, or else the upgrade instructions, would note the requirement to set the permissions for that branch of folders and files.

I run the Premissions checker before the upgrade.
But if its not mentioned anywhere is a vaild point.

1. Check Permissions.
2. Check Files
3. Check Rick's online.
4. Proceed with update lol

The permission checker in the installer only checks the permissions required to install for the first time.

The permissions checker in the installed product however checks the permissions globally on your install based on what all files and folders should be chmodded.

According to the permission checker, all files which can be written to should be chmodded 666, whereas all folders which will have data in them that can be written shoudl be chmodded 777

Yes, they should have been at those values. However, the files were at 644, and folders at 755.

I had to manually set them to 666 and 777, which is the point I am trying to make: That the instructions should mention this.

Well, not ALL files/folders are required to be writeable for an install (as most people don't need to be able to use the language or template editors in the cp); hence why the permission checker won't look for them; some users don't want everything writable due to security concerns.