From a security point of view the correct permissions would depend on your server setup and how you make the change depends on your admin arrangements.
However, before you try fiddling with the permissions, can you do a quick test. There is a file called test.php inside AutoView which verifies that everything is in place and accessible by the webserver process. You should able to run with a URL in the form of :
http://<path to moodle inst>/mod/autoview/test.php
You can see what the output is supposed to look like when everything is working by going to http://autoview.autotrain.org/mod/autoview/test.php
However, assuming a typical Linux server where only a few sysadmins have file system/shell access, it's safe to give read/execute access to all users. This should be the default for files extracted from the downloads on our website, but your server settings can override this. If you are logged into your server at the command prompt, switch to the Moodle mod directory and type
ls -l
You should see something like this :-
drwxrwxr-x 4 tmw web 4096 Sep 30 01:05 assignment
drwxrwxr-x 8 tmw web 4096 Jan 29 16:17 autoview
drwxrwxr-x 6 tmw web 4096 Sep 30 01:05 chat
drwxrwxr-x 3 tmw web 4096 Nov 1 2008 choice
drwxrwxr-x 5 tmw web 4096 Sep 30 01:05 data
drwxrwxr-x 3 tmw web 4096 Sep 30 01:05 forum
drwxrwxr-x 4 tmw web 4096 Sep 30 01:05 glossary
drwxrwxr-x 6 tmw web 4096 Sep 30 01:05 hotpot
-rw-rw-r-- 1 tmw web 0 Jan 23 2005 index.html
drwxrwxr-x 3 tmw web 4096 Apr 25 2008 journal
drwxrwxr-x 3 tmw web 4096 Oct 11 2007 label
drwxrwxr-x 3 tmw web 4096 Sep 25 2007 lams
drwxrwxr-x 4 tmw web 4096 Sep 30 01:05 lesson
drwxrwx--- 4 tmw web 4096 Oct 6 13:36 loes
drwxrwxr-x 5 tmw web 4096 Sep 30 01:05 quiz
-rw-rw-r-- 1 tmw web 1178 Feb 12 2004 README.txt
drwxrwxr-x 4 tmw web 4096 Sep 30 01:05 resource
drwxrwx--- 4 tmw web 4096 Oct 6 13:36 resume
drwxrwxr-x 5 tmw web 4096 Sep 30 01:05 scorm
drwxrwx--- 4 tmw web 4096 Oct 6 13:35 start
drwxrwxr-x 3 tmw web 4096 Nov 22 2007 survey
drwxrwxr-x 4 tmw web 4096 Sep 30 2008 wiki
drwxrwxr-x 3 tmw web 4096 Sep 30 01:05 workshop
The permission for the autoview directory should be drwxrwxr-x. If it isn't, execute :
chmod a+rx autoview
You'll also need to check the content of the autoview directory and it's sub directories for the correct permissions. Directories should be drwxrwxr-x, regular files are -rw-rw-r--. If you need to change the permissions for a file, type :
chmod a+r <file name>
If you are using an admin console, you should be able to view and edit file permissions using the various menu functions of the console.