I am trying to install Concrete5 version 5.6.3 on a Windows hosting account and I am getting the following error

Warning: rename(\\HOSTING\DFS\20\8\2\5\2071271528\user\sites\daytonyoga.com\www\NYZ_concrete5_6_3/config/site_install.php,
\\HOSTING\DFS\20\8\2\5\2071271528\user\sites\daytonyoga.com\www\NYZ_concrete5_6_3/config/site.php) [function.rename]: Permission denied in \\HOSTING\DFS\20\8\2\5\2071271528\user\sites\daytonyoga.com\www\NYZ_concrete5_6_3\concrete\core\models\starting_point_package.php on line 180
{"error":false}

The offending line is

rename(DIR_CONFIG_SITE . '/site_install.php', DIR_CONFIG_SITE . '/site.php');

The "\NYZ_concrete5_6_3\config" directory has R/W permissions and so do the files:
site_install.php, site_install_user.php, site_theme_paths.php
in the directory.

I can't find any other file named 'site_install.php' in the source code. What directory/file need access permissions?

Or, what's the fix?

Thanks in advance,

K.E