Createing new block

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i am getting following exception errors..
Exception Occurred: BasicTestBlockController not found. Please check that the block controller file contains the correct class name.
#0 C:\wamp\www\test1\concrete\single_pages\dashboard\install.php(4): BlockTypeList::getAvailableList()
#1 C:\wamp\www\test1\concrete\libraries\view.php(599): include('C:\wamp\www\tes...')
#2 C:\wamp\www\test1\concrete\dispatcher.php(177): View->render(Object(Page))
#3 C:\wamp\www\test1\index.php(2): require('C:\wamp\www\tes...')
#4 {main}
when i am createing a block
any one help me in this regard..