How to upgrade on domain?

Hello,

I have OpenEMR 5.00 on mydomain.com/openemr and I have been trying to upgrade it to OpenEMR 5.01 by following these instructions.
Clear the log tables by going to Administration > Backup click the Create Eventlog Backup
Once Event log is done select backup again and click Create Backup
Move current (5.0.0) /openemr directory to a backup directory
Unpackage 5.0.1 openemr into web directory and rename the directory to openemr
Move following directories from old 5.0.0 version to /openemr directory:

    openemr/sites/default/documents 
    openemr/sites/default/edi 
    openemr/sites/default/era 
    openemr/sites/default/letter_templates 

Record the openemr/sites/default/sqlconf.php file variables from your old 5.0.0 version, and type these into the openemr/sites/default/sqlconf.php file in new openemr version
In the openemr/sites/default/sqlconf.php file, set the $config variable (found near bottom of file within bunch of slashes) to 1 ($config = 1;).
Open openemr/sql_upgrade.php (http://localhost/openemr/sql_upgrade.php) in web browser, choose 5.0.0 and click 'Upgrade Database'
Configure optional settings in openemr/sites/default/config.php files 

However, I get a blank white screen when I try to login or access any page (except for setup.php).

Any insight or help is appreciated!

Thanks

John