Image Upload Not Working Properly

I'm trying to upload a new login image for a site we're developing, and when I go to upload the client's logo for the login image, I get this:

Warning: move_uploaded_file(/home/cyclonic/public_html/ctg/wp-content/login-image/colorTreeGroup.png) [function.move-uploaded-file]: failed to open stream: No such file or directory in /home/cyclonic/public_html/ctg/wp-content/plugins/login-image/login-image.php on line 147

Warning: move_uploaded_file() [function.move-uploaded-file]: Unable to move '/tmp/phprsHMor' to '/home/cyclonic/public_html/ctg/wp-content/login-image/colorTreeGroup.png' in /home/cyclonic/public_html/ctg/wp-content/plugins/login-image/login-image.php on line 147

Warning: Cannot modify header information - headers already sent by (output started at /home/cyclonic/public_html/ctg/wp-content/plugins/login-image/login-image.php:147) in /home/cyclonic/public_html/ctg/wp-includes/pluggable.php on line 866

Warning: file_get_contents(/home/cyclonic/public_html/ctg/wp-content/login-image/colorTreeGroup.png) [function.file-get-contents]: failed to open stream: No such file or directory in /home/cyclonic/public_html/ctg/wp-content/plugins/login-image/login-image.php on line 157

Warning: imagecreatefromstring() [function.imagecreatefromstring]: Empty string or invalid image in /home/cyclonic/public_html/ctg/wp-content/plugins/login-image/login-image.php on line 157

Warning: Cannot modify header information - headers already sent by (output started at /home/cyclonic/public_html/ctg/wp-content/plugins/login-image/login-image.php:147) in /home/cyclonic/public_html/ctg/wp-includes/pluggable.php on line 866

Warning: Cannot modify header information - headers already sent by (output started at /home/cyclonic/public_html/ctg/wp-content/plugins/login-image/login-image.php:147) in /home/cyclonic/public_html/ctg/wp-includes/pluggable.php on line 866

Warning: imagecreatetruecolor() [function.imagecreatetruecolor]: Invalid image dimensions in /home/cyclonic/public_html/ctg/wp-includes/media.php on line 1010

Warning: imagecopyresampled(): supplied argument is not a valid Image resource in /home/cyclonic/public_html/ctg/wp-content/plugins/login-image/login-image.php on line 175

Warning: imagedestroy(): supplied argument is not a valid Image resource in /home/cyclonic/public_html/ctg/wp-content/plugins/login-image/login-image.php on line 182

Warning: imagepng(): supplied argument is not a valid Image resource in /home/cyclonic/public_html/ctg/wp-content/plugins/login-image/login-image.php on line 184

Warning: Cannot modify header information - headers already sent by (output started at /home/cyclonic/public_html/ctg/wp-content/plugins/login-image/login-image.php:147) in /home/cyclonic/public_html/ctg/wp-includes/pluggable.php on line 866

Warning: imagedestroy(): supplied argument is not a valid Image resource in /home/cyclonic/public_html/ctg/wp-content/plugins/login-image/login-image.php on line 187

Warning: stat() [function.stat]: stat failed for /home/cyclonic/public_html/ctg/wp-content/login-image/ in /home/cyclonic/public_html/ctg/wp-content/plugins/login-image/login-image.php on line 189

Warning: Cannot modify header information - headers already sent by (output started at /home/cyclonic/public_html/ctg/wp-content/plugins/login-image/login-image.php:147) in /home/cyclonic/public_html/ctg/wp-includes/pluggable.php on line 866

Warning: Cannot modify header information - headers already sent by (output started at /home/cyclonic/public_html/ctg/wp-content/plugins/login-image/login-image.php:147) in /home/cyclonic/public_html/ctg/wp-includes/functions.php on line 861

Warning: Cannot modify header information - headers already sent by (output started at /home/cyclonic/public_html/ctg/wp-content/plugins/login-image/login-image.php:147) in /home/cyclonic/public_html/ctg/wp-includes/functions.php on line 862

Suggestions?

Thanks -

Sue