Access Denied in manager files

I have moved site to other server..and upgraded it to latest MODx Revolution 2.1.3.
when i try to see files in
MODx manager -> Files i see "Access Denied" Error

I have all my files in /var/www/web
and this is directory permissions for web (using command ls -l )

drwxrwxrwx 22 www-data www-data 4096 2011-10-12 12:21 web

why this is happening ?

I gone through older forum posts...but the suggestion there are for older versions.

First off ensure that the owner is in fact that user assigned to your web service (Apache, etc.). If that is correct you might run these two commands to ensure proper file and folder permissions by default:



Then rerun your setup for the site to ensure all the ModX path information is correct.

Another common item that is overlooked is clearing your /core/cache/ folder.

Cheers

i am not sure how to check this....i google and found that ps aux | grep httpd can show me the result...so i ran that command and here is the output

amit 32185 0.0 0.0 3324 824 pts/0 S+ 02:23 0:00 grep --color=auto httpd

and here is the output for ps aux | grep apache2

root 29165 0.0 0.7 54904 15756 ? Ss Oct12 0:01 /usr/sbin/apache2 -k start
www-data 29224 0.0 1.0 60956 20876 ? S Oct12 0:12 /usr/sbin/apache2 -k start
www-data 30522 0.0 0.9 59988 18940 ? S Oct12 0:03 /usr/sbin/apache2 -k start
www-data 30676 0.0 0.9 59728 18728 ? S Oct12 0:03 /usr/sbin/apache2 -k start
www-data 30832 0.0 0.9 61496 20348 ? S Oct12 0:01 /usr/sbin/apache2 -k start
www-data 30947 0.0 0.8 57024 16764 ? S Oct12 0:02 /usr/sbin/apache2 -k start
www-data 31065 0.0 0.7 56892 15424 ? S Oct12 0:00 /usr/sbin/apache2 -k start
www-data 31071 0.0 0.5 54904 11172 ? S Oct12 0:00 /usr/sbin/apache2 -k start
www-data 31085 0.0 0.7 57024 15532 ? S Oct12 0:00 /usr/sbin/apache2 -k start
www-data 31277 0.0 0.4 54904 10200 ? S Oct12 0:00 /usr/sbin/apache2 -k start
www-data 31278 0.0 0.4 54904 10188 ? S Oct12 0:00 /usr/sbin/apache2 -k start
amit 32187 0.0 0.0 3328 892 pts/0 S+ 02:23 0:00 grep --color=auto apache2

and second thing i tried clearing the cache and m getting long list of output
i can see there is one error..something like this
Resource URI already exists for resource id = 5016; skipping duplicate resource URI for resource id = 5221

Its a loong list with diff ids and after that few successful messages

Is it normal ??

Have you manually deleted the files in the /core/cache/ folder, if not then that would be better at this point since the site was already moved. If you have done that and then completed the other two commands above try re-pushing the ModX site and running setup.

Your ps aux shows that your file ownership is correct base on basic config options, are you running the suEXEC for Apache? Though I have a tough time believing it's permissions if all the other portions of the site are functioning properly. The best thing, in my opinion, is to manually clear the cache folder and upload your entire site again and finally running setup.

Cheers

i completeley deleted cache files...but no luck yet..i still cant access files
i cant run setup again...coz there are many changes that i will need to re-edit.

Running setup program again is my last option. but before that i want to try each possible option.

Running the setup as an "Upgrade Existing Install", which is default, will not remove any of your changes.

i ran the setup again and also deleted cache files...but still i am getting the same "Access denied error"

You've said that you've moved this to another server, is this one you manage? and are the file permissions 755 correct?

We have 4 servers at work and 2 run on 755 file permissions and 2 have to be 777.

Also have you updated the path in the workspaces table in the database, in my experience that doesn't update on a upgrade?

@paul :
Yes this is managed by me, and output of command "ls - All" shows below result


drwxrwxrwx 22 www-data www-data 4096 2011-10-17 17:00 web

and i just checked modx_workspaces table and can see its alright there,

path is correct "/var/www/web/core/"

This is now making me crazy x-/