Team logo upload error

Hi Team,

I am new in leaguemanager plugin.

I can’t upload team logo from add/edit team page. i got following error:

Warning: Division by zero in D:\work\wp-test\wp-content\plugins\leaguemanager\lib\thumbnail.inc.php on line 216

Warning: Division by zero in D:\work\wp-test\wp-content\plugins\leaguemanager\lib\thumbnail.inc.php on line 229

Warning: imagecreatetruecolor(): Invalid image dimensions in D:\work\wp-test\wp-content\plugins\leaguemanager\lib\thumbnail.inc.php on line 321

Warning: imagealphablending() expects parameter 1 to be resource, boolean given in D:\work\wp-test\wp-content\plugins\leaguemanager\lib\thumbnail.inc.php on line 327

Warning: imagecopyresampled() expects parameter 1 to be resource, boolean given in D:\work\wp-test\wp-content\plugins\leaguemanager\lib\thumbnail.inc.php on line 340

Warning: Division by zero in D:\work\wp-test\wp-content\plugins\leaguemanager\lib\thumbnail.inc.php on line 216

Warning: imagecreatetruecolor(): Invalid image dimensions in D:\work\wp-test\wp-content\plugins\leaguemanager\lib\thumbnail.inc.php on line 321

Warning: imagealphablending() expects parameter 1 to be resource, boolean given in D:\work\wp-test\wp-content\plugins\leaguemanager\lib\thumbnail.inc.php on line 327

Warning: imagesavealpha() expects parameter 1 to be resource, boolean given in D:\work\wp-test\wp-content\plugins\leaguemanager\lib\thumbnail.inc.php on line 328

Warning: imagecopyresampled() expects parameter 1 to be resource, boolean given in D:\work\wp-test\wp-content\plugins\leaguemanager\lib\thumbnail.inc.php on line 340

Warning: chmod(): No such file or directory in D:\work\wp-test\wp-content\plugins\leaguemanager\lib\image.php on line 114

Warning: chmod(): No such file or directory in D:\work\wp-test\wp-content\plugins\leaguemanager\lib\image.php on line 115

Could you help me??

http://ww.wp.xz.cn/extend/plugins/leaguemanager/