it could be chocking on generating the thumbnails.
in the webassist/kfm/initialize.php file, find the following line of code:
$kfm->defaultSetting('listview',0);
and change it to:
$kfm->defaultSetting('listview',1);
this will force the folder display to use list view instead of showing icons.
it could also be that the corrupted files are causing the issue, if you can, try deleting them and see if that fixes it.