page cannot be displayed after login

[ehmann]

I have installed SugarCRM on SLES 9 s390x with MySQL 5.0.27 and PHP 5.1.6 and when I login with admin I get a page not found error using IE 6 and a blank page when I use FireFox 2.0
This happens using SugarCRM 4.5.0e and 4.5.0f.
I have reviewed two threads pertaining to this issue and the fixes in those recent threads do not apply here.
I am not using LDAP as an authentication mechanism nor did I see an explicit choice for it in the install.
I have looked at the Authenticate.php in modules and the Location: index.php is correct.
I need to get this running for an evaluation of ...... vs. SugarCRM.
I have ...... running and I thought the SugarCRM install would be just as straight forward.
Any help would be much appreciated....thanks

[rafael.menezes]

Verify the permissions on your sugarcrm folder. Your webserver user must be without permission.

[ehmann]

The permissions have been set according to the documentation....
cache,custom,data,modules and config.php are all writable....

[SponjWorthy]

I had a problem similar to this, I changed the default directory that the sugar install went to to my d drive. After I did that I got a blank page. I checked the httpd.conf found that the document root directory was set right... Strike one, so I went to my apache logs and read through them, lo and behold there was an error there. Come to find out in the php.ini (if your using windows) there is a line that restricts where php can view files. If your apache document root isn't in the list. Then you will get a blank page. Look for open_basedir = in your php config file and make sure that PHP can see the directory your files are in. I may be leading you down the wrong path but I know that it happened to me right after I set up my install. If you give us a little more info maybe we can beat out the problem faster. Good Luck! Let us know if there is an error in your apache logs. Its always a great place to start!
~Sponj