[Plugin: Register Plus] error on image upload

I get the following error on trying to upload an image – how can I rectify this please?

thanks (x’s replace actual address)

Warning: move_uploaded_file(/home/xxx/public_html/scorched-earth//home/xxx/public_html/xxx/wp-content/uploads/blogs.gif) [function.move-uploaded-file]: failed to open stream: No such file or directory in /home/xxx/public_html/xxx/wp-content/plugins/register-plus/register-plus.php on line 274

Warning: move_uploaded_file() [function.move-uploaded-file]: Unable to move ‘/var/tmp/phpz7TfeF’ to ‘/home/xxx/public_html/xxx//home/xxx/public_html/xxx/wp-content/uploads/blogs.gif’ in /home/xxx/public_html/xxx/wp-content/plugins/register-plus/register-plus.php on line 274

Warning: Cannot modify header information – headers already sent by (output started at /home/xxx/public_html/xxx/wp-content/plugins/register-plus/register-plus.php:274) in /home/xxx/public_html/xxx/wp-includes/functions.php on line 698

Warning: Cannot modify header information – headers already sent by (output started at /home/xxx/public_html/xxx/wp-content/plugins/register-plus/register-plus.php:274) in /home/xxx/public_html/xxx/wp-includes/functions.php on line 699