ahhh I not why - but all have solution

The problem is the WIKI IN: http://docs.elgg.org/wiki/Duplicate_Installation

Is for any old version and not work with the new versions

Follow the instructions and stop in the point Database Instructions 

I give you the new instructions:

1 .- Copy the installation and databases 

2.- Follow the MYSQL sintax how I post here

Database Entries

We must now change 4 entries in the database. This is easily accomplished with 4 simple SQL commands:

Change the installation path

UPDATE `elgg_datalists` SET `value` = "/var/www/elgg_test/" WHERE `name` = "path";

Change the data directory

UPDATE `elgg_datalists` SET `value` = "/var/data/elgg_test/" WHERE `name` = "dataroot";

Change the site URL

UPDATE `elgg_sites_entity` SET `url` = "http://test.myelgg.org/";

Change the filestore data directory

(Only change the first path here!!)

UPDATE elgg_metastrings set string = '/var/data/elgg_test/' WHERE id = (SELECT value_id from elgg_metadata where name_id = (SELECT * FROM (SELECT id FROM elgg_metastrings WHERE string = 'filestore::dir_root') as ms2) LIMIT 1) ;

Change the paths for the paths of your server in the mysql script example:

'/var/data/elgg_test/' to '/var/data/httpdocs/'

now You not need to copy the "data" directory you can make a new one if you like 

afther make sure you make chmod +x data and chmod 777 data

and make sure have your apache owner . That you make with the command: chown 

example: chown www-data:www-data data

Check .htaccess If you have made changes to .htaccess that modify any paths, make sure you update them in the test installation.

Update Webserver Config

For this example, you must edit the Apache config to enable a subdomain with a document root of /var/www/elgg_test/. If you plan to install into a subdirectory of your document root, this step is unnecessary.

Run upgrade.php

To regenerate cached data, make sure to run http://test.myelgg.org/upgrade.php

Now you go to see the SERVER AND TEMPLATES WORK FINE. If not please contact again.

The problem is in the wiki say round in all mysql script Where is UPDATE `elggdatalists`need to be change for UPDATE `elgg_datalists`

Actually my tables are named 'elggdatalists' not  'elgg_datalists' so I have changed all the paths on the database.  I don't know where to check else

oke if you already change all the paths and you are sure the paths is correct

The only problem for you not see the correct template is in the directory data

Try to recreate the directory data

By example if you data directory is in /var/www/httpdocs/data/

change for /var/www/httpdocs/data/new/

You not need to make the directory "new" inside of Data Elgg go to make automatic

Now update your database path "data" with that new path this means all teh MYSQL changes

Run upgrade.php To regenerate cached data, make sure to run http://test.myelgg.org/upgrade.php

now if you not see your template working again

Go to your directory data you make before example in my example is 

/var/www/httpdocs/data/

if you not see a diretory call "new" like in my example  your problem is in a problem of USER in Apache

Correct the USER and try again

The folder "new" is created when i run upgrade.php but the template is still not displayed properly :s

ok can you go to the directory before "data" and make the command

ls -l

Please post the print here

drwx------ 3 nobody    999  4096 sep 11  2009 a
drwxr-xr-x 7 root   root    4096 avr 30 17:56 A
drwx------ 4 nobody    999  4096 sep 30  2009 e
drwxr-xr-x 4 root   root    4096 avr 30 17:56 E
drwx------ 3 nobody    999  4096 oct  3  2009 f
drwxr-xr-x 3 root   root    4096 sep 14  2009 F
drwxr-xr-x 3 root   root    4096 sep 11  2009 G
drwxr-xr-x 3 root   root    4096 nov  5  2009 h
drwxr-xr-x 3 root   root    4096 sep 11  2009 I
drwxr-xr-x 3 root   root    4096 sep 14  2009 L
drwx------ 3 nobody    999  4096 nov 13  2009 m
drwxr-xr-x 5 root   root    4096 avr 30 17:56 M
drwxr-xr-x 4 root   root    4096 avr 30 17:56 r
drwxr-xr-x 5 root   root    4096 jan  8 14:42 S
drwxr-xr-x 3 root   root    4096 sep 11  2009 v
-rw-r--r-- 1 apache apache   118 mai 27 15:01 view_paths
-rw-rw-r-- 1 nobody    999 24591 mai 25 11:23 view_paths~
drwxr-xr-x 2 root   root    4096 mai 25 11:23 views_simplecache
drwxr-xr-x 4 root   root    4096 sep 10  2009 Y

Hello,
Which version of elgg are you using? Did you try to delete the cache? (Maybe disabling the use cache option?).
Regards.

I'm using elgg 1.6 I tried o delete the the view_patsh and views_simplecache as indicated on the tuto, that's all I didn't delete anything else. I have already tried to duplicate the same website on an other server and it's working perfectly. Could it be a configuration problem?

MY friends try that

Go to the directory before data and make that in root:

If you use Ubuntu make first:   sudo su and put your password

After that in any linux make chown -R apache:apache data

And after execute the file upgrade.php 

drwx------ 3 apache apache  4096 sep 11  2009 a
drwxr-xr-x 7 apache apache  4096 avr 30 17:56 A
drwx------ 4 apache apache  4096 sep 30  2009 e
drwxr-xr-x 4 apache apache  4096 avr 30 17:56 E
drwx------ 3 apache apache  4096 oct  3  2009 f
drwxr-xr-x 3 apache apache  4096 sep 14  2009 F
drwxr-xr-x 3 apache apache  4096 sep 11  2009 G
drwxr-xr-x 3 apache apache  4096 nov  5  2009 h
drwxr-xr-x 3 apache apache  4096 sep 11  2009 I
drwxr-xr-x 3 apache apache  4096 sep 14  2009 L
drwx------ 3 apache apache  4096 nov 13  2009 m
drwxr-xr-x 5 apache apache  4096 avr 30 17:56 M
drwxr-xr-x 4 apache apache  4096 avr 30 17:56 r
drwxr-xr-x 5 apache apache  4096 jan  8 14:42 S
drwxr-xr-x 3 apache apache  4096 sep 11  2009 v
-rw-r--r-- 1 apache apache   118 jun  1 15:17 view_paths
-rw-rw-r-- 1 apache apache 24591 mai 25 11:23 view_paths~
drwxr-xr-x 2 apache apache  4096 mai 25 11:23 views_simplecache
drwxr-xr-x 4 apache apache  4096 sep 10  2009 Y

 

Done, but it's not working. the groups are still note displayed properly. :s