This is a long shot... but.

Remember to check the file permissions of the parent directories as well as the file itself. In particular, suppose you use mkdir to create two levels of directory (in a single invocation) and to set permissions. Then the lower directory will have the permissions you intended, but the higher one may not.

It's a long shot, but it chewed up about one workday for me earlier this year.

throop

ps. In listing the error message, you used [] where you should have used &91;&93;. Or put the error message inside <code>