Error upgrading to 5.1.1

[tschmidt]

I'm trying to upgrade to 5.1.1. from 5.1.0 and when I go to the install/upgrade.php file, I just get the "There is a serious error.....page cannot be rendered" error from Chrome. I also tried in IE and I get the website cannot be displayed error. I am using php 5.4.13 and MySQL 5.1.54. Any suggestions on things to try or check? Note that I can still access the control panel fine so I am reverting back to 5.1.0 at the moment. One thing I noted as odd is that I can only find the upgrade.php file if I don't append the "www" on the front of my URL....if I append the "www" then the script is not found. Any help is appreciated. Thanks.

[Mark.B]

Check that your .htaccess file is still in place...for an upgrade from 5.1.0 to 5.1.1 you don't need to replace this, so just use the one you already have.

[tschmidt]

Check that your .htaccess file is still in place...for an upgrade from 5.1.0 to 5.1.1 you don't need to replace this, so just use the one you already have.

I tried that and it didn't seem to make a difference. Any other suggestions? Thanks.

[Mark.B]

Download a fresh copy of the files and upload these, making sure you overwrite the old ones.