[Plugin: WordPress Backup to Dropbox] Plugin installs, but doesn't function

Hi there,

I have used this great plugin successfully on a few sites now, but on a new installation I get nothing. The plugin seems to install with no issues, but when looking to edit the settings or make a back-up the page is blank. I only see the standard left hand wordpress menu.

The error in my log file is:

[Wed Aug 08 12:05:15 2012] [warn] [client 92.**.**.**] mod_fcgid: stderr: PHP Fatal error: Cannot redeclare class HTTP_OAuth_Consumer in /var/www/vhosts/******/******/wp-content/plugins/wordpress-backup-to-dropbox/PEAR_Includes/HTTP/OAuth/Consumer.php on line 420, referer: http://****************/wp-admin/admin.php?page=backup-to-dropbox

I have tried to roll back to a previous version of the plugin, but it’s the same.

I’m using version 1.2 of the plugin and WP 3.4.1

Thanks in advance.

http://ww.wp.xz.cn/extend/plugins/wordpress-backup-to-dropbox/