[Plugin: Echo Comments Importer] Import not working – Error message and Invalid file

While trying to import echo comments I get the following message:

Warning: copy(/home/www/web64/html/bluushuus/wordpress/wp-content/uploads/bluushuus-2.blogspot.com-comments.xml_.txt) [function.copy]: failed to open stream: Permission denied in /home/www/web64/html/bluushuus/wordpress/wp-admin/includes/file.php on line 348

Warning: gzopen() [function.gzopen]: Unable to access /home/www/web64/html/bluushuus/wordpress/wp-content/uploads/bluushuus-2.blogspot.com-comments.xml_.txt in /home/www/web64/html/bluushuus/wordpress/wp-content/plugins/echo-comments-importer/echo-importer.php on line 102

Warning: gzopen(/home/www/web64/html/bluushuus/wordpress/wp-content/uploads/bluushuus-2.blogspot.com-comments.xml_.txt) [function.gzopen]: failed to open stream: No such file or directory in /home/www/web64/html/bluushuus/wordpress/wp-content/plugins/echo-comments-importer/echo-importer.php on line 102
Invalid file
Please upload a valid Echo export file.

Any help is much appreciated.

http://wordpress.org/extend/plugins/echo-comments-importer/