K2 Store SCREAM: Error suppression ignored

I have just installed quick start. When i click on K2 Store, I get following error from backend. Any help?

K2 Store Error
( ! ) SCREAM: Error suppression ignored for
( ! ) Notice: Undefined index: in C:\wamp\www\forst\libraries\joomla\application\component\view.php on line 413

( ! ) SCREAM: Error suppression ignored for
( ! ) Notice: Trying to get property of non-object in C:\wamp\www\forst\administrator\components\com_k2store\views\cpanel\tmpl\default_update.php on line 35

System Information
PHP Built On Windows NT RAJESH 6.1 build 7601 (Windows 7 Enterprise Edition Service Pack 1) AMD64
Database Version 5.5.24-log
Database Collation utf8_general_ci
PHP Version 5.3.13
Web Server Apache/2.2.22 (Win64) PHP/5.3.13
WebServer to PHP Interface apache2handler
Joomla! Version Joomla! 2.5.6 Stable [ Ember ] 19-June-2012 14:00 GMT
Joomla! Platform Version Joomla Platform 11.4.0 Stable [ Brian Kernighan ] 03-Jan-2012 00:00 GMT
User Agent Mozilla/5.0 (Windows NT 6.1; WOW64; rv:15.0) Gecko/20100101 Firefox/15.0.1

I resolved this issues by Decreasing error level to simple. thanks

but still i wonder.... this error should not come for default error level setting....

Hi,

It seems that if the SCREAM is enabled then the default error reporting levels are ignored, source: http://www.php.net/manual/pl/intro.scream.php