View mode displays blank screen

This is known as the WordPress Screen of Death (WSOD), which is explained here: http://codex.wordpress.org/Common_WordPress_Errors

In my experience, the first thing to do is to set WP_DEBUG to TRUE in wp-config.php, which is explained here: http://codex.wordpress.org/Editing_wp-config.php#Debug

That should give you an error message so you know where to start solving your problem.