Ning to BuddyPress User Importer crashed, won't restart when importing members

Was runnning an import of user got through several hundred when we recieved the following errors:

Warning: mysql_real_escape_string() expects parameter 1 to be string, object given in /home/fr33/public_html/wp-includes/wp-db.php on line 785

Catchable fatal error: Object of class WP_Error could not be converted to string in /home/fr33/public_html/wp-content/plugins/ning-buddypress-importer/includes/ning-buddypress-importer.php on line 435

The first error is repeated 12 times before the second error is listed. If we attempt to restart the import we get these errors immediately.

Please Help.