Topic: Problems with installation of 2.1b
Here are the error messages - they occur together with an almost blank page only after selecting theme modern. I couldn't upgrade either because the previous version had the theme modern selected. A second installation on the same server didn't work either, apparently due to issues (I believe) with the session. This is a separate server now.
include_once(../themes/default/renderer.php) [function.include-once]: failed to open stream: No such file or directory in file: /var/www/customers/fa/includes/page/header.inc at line 119
include_once() [function.include]: Failed opening '../themes/default/renderer.php' for inclusion (include_path='/usr/share/pear/PEAR') in file: /var/www/customers/fa/includes/page/header.inc at line 119
Class 'renderer' not found in /var/www/customers/fa/includes/page/header.inc on line 120
rgds
rl