Mohsen,

Try creating a directory named "files" in the root of your drupal install -- it looks like that, when drupal attemps to create this directory, it doesn't have the necessary permissions -- different web hosts are set up with different types of access rights, and creating the "files" directory manually might sidestep your issue.

Cheers,

Bill

----- Bill Fitzgerald http://www.funnymonkey.com Tools for Teachers 503 897 7160

Mohsen Pahlevanzadeh wrote:

Dear all, I have installed Drupal recently.But i recieve following message :

warning: mkdir(files): Permission denied in /var/www/iossd/includes/file.inc on line 86 But i know that i must change e permission.But i don't know its path. Please help me....