After installation BearLeague on local hoster (joomla1.5.20) system say:
Impossible to define function for sending mail.
Component Inatallation : Successfully
BearLeague. Create your own league.

Notice: Undefined index: extension in C:\wamp\www\Joomla15\components\com_bearleague\includes\thumb.php on line 8

Notice: Undefined index: extension in C:\wamp\www\Joomla15\components\com_bearleague\includes\thumb.php on line 8

Notice: Undefined index: extension in C:\wamp\www\Joomla15\components\com_bearleague\includes\thumb.php on line 8

Notice: Undefined index: extension in C:\wamp\www\Joomla15\components\com_bearleague\includes\thumb.php on line 8

Notice: Undefined index: extension in C:\wamp\www\Joomla15\components\com_bearleague\includes\thumb.php on line 8

Notice: Undefined index: extension in C:\wamp\www\Joomla15\components\com_bearleague\includes\thumb.php on line 8

Notice: Undefined index: extension in C:\wamp\www\Joomla15\components\com_bearleague\includes\thumb.php on line 8

Notice: Undefined index: extension in C:\wamp\www\Joomla15\components\com_bearleague\includes\thumb.php on line 8

Notice: Undefined index: extension in C:\wamp\www\Joomla15\components\com_bearleague\includes\thumb.php on line 8


What is it and what I have to do?

Line 8 : if ( strtolower($info['extension']) == 'jpg' || strtolower($info['extension']) == 'gif' || strtolower($info['extension']) == 'png'){

hello

well, this notice is not an error. so don't worry about the component work. soon it will be corrected but again this notice doesn't influence on how component's working