i click on branding > images > then choose my favicon

i click on branding > images > then choose my favicon and i get the following error...

Warning: imagecreatefromstring() [function.imagecreatefromstring]: gd warning: one parameter to a memory allocation multiplication is negative or zero, failing operation gracefully in /home/keropr/public_html/wp-content/plugins/ultimate-branding/ultimate-branding-files/modules/favicons.php on line 93

Warning: imagecreatefromstring() [function.imagecreatefromstring]: Passed data is not in 'WBMP' format in /home/keropr/public_html/wp-content/plugins/ultimate-branding/ultimate-branding-files/modules/favicons.php on line 93

Warning: imagecreatefromstring() [function.imagecreatefromstring]: Couldn't create GD Image Stream out of Data in /home/keropr/public_html/wp-content/plugins/ultimate-branding/ultimate-branding-files/modules/favicons.php on line 93

Warning: Cannot modify header information - headers already sent by (output started at /home/keropr/public_html/wp-content/plugins/ultimate-branding/ultimate-branding-files/modules/favicons.php:93) in /home/keropr/public_html/wp-includes/pluggable.php on line 875

Warning: imagecopyresampled() expects parameter 2 to be resource, boolean given in /home/keropr/public_html/wp-content/plugins/ultimate-branding/ultimate-branding-files/modules/favicons.php on line 112

Warning: imagedestroy() expects parameter 1 to be resource, boolean given in /home/keropr/public_html/wp-content/plugins/ultimate-branding/ultimate-branding-files/modules/favicons.php on line 119

Warning: Cannot modify header information - headers already sent by (output started at /home/keropr/public_html/wp-content/plugins/ultimate-branding/ultimate-branding-files/modules/favicons.php:93) in /home/keropr/public_html/wp-includes/pluggable.php on line 875