After backing up is finished the plugin sends an email. Email contains a link to the zip file. This link, however, is broken. It has an & ; sign (although email is marked as Content-Type:text/plain) in it, as can be seen in the following email excerpt:
"Unfortunately the backup file was too large to attach to this email.
You can download the backup file by clicking the link below:
http://site name]/wp-admin/tools.php?page=backupwordpress& a m p ;hmbkp_download=[BASE64 encoded string]"
I'm using plugin v 2.2.1, WP 3.5.1 and running PHP version 5.3.3-7+squeeze15.
[EDIT1: link was in one line after all, mentions to two lines removed.
EDIT2: white space added in link to keep the ampersand there]