Im trying to install slideshow module on JM Pixeri but did not work

Good Afternoon.

Im trying to install JM SlideShow Module on JM Pixeri but the system show this error.

Do you know why is this append?

THanks for help

Code:

a:5:{i:0;s:101:"Invalid config field backend model: joomlart_jmslideshow/system_config_backend_jmSlideshow_checkvalue";i:1;s:1430:"#0 C:\xampp\htdocs\www.casavelez.co\includes\src\Mage_Adminhtml_Block_System_Config_Form.php(320): Mage::throwException('Invalid config ...')
#1 C:\xampp\htdocs\www.casavelez.co\includes\src\Mage_Adminhtml_Block_System_Config_Form.php(210): Mage_Adminhtml_Block_System_Config_Form->initFields(Object(Varien_Data_Form_Element_Fieldset), Object(Mage_Core_Model_Config_Element), Object(Mage_Core_Model_Config_Element))
#2 C:\xampp\htdocs\www.casavelez.co\includes\src\Mage_Adminhtml_Block_System_Config_Edit.php(92): Mage_Adminhtml_Block_System_Config_Form->initForm()
#3 C:\xampp\htdocs\www.casavelez.co\app\code\core\Mage\Adminhtml\controllers\System\ConfigController.php(102): Mage_Adminhtml_Block_System_Config_Edit->initForm()
#4 C:\xampp\htdocs\www.casavelez.co\includes\src\__default.php(13373): Mage_Adminhtml_System_ConfigController->editAction()
#5 C:\xampp\htdocs\www.casavelez.co\includes\src\__default.php(17629): Mage_Core_Controller_Varien_Action->dispatch('edit')
#6 C:\xampp\htdocs\www.casavelez.co\includes\src\__default.php(17220): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#7 C:\xampp\htdocs\www.casavelez.co\includes\src\__default.php(19712): Mage_Core_Controller_Varien_Front->dispatch()
#8 C:\xampp\htdocs\www.casavelez.co\app\Mage.php(640): Mage_Core_Model_App->run(Array)
#9 C:\xampp\htdocs\www.casavelez.co\index.php(80): Mage::run('', 'store')
#10 {main}";s:3:"url";s:119:"/www.casavelez.co/index.php/admin/system_config/edit/section/joomlart_jmslideshow/key/e051d88abdd9aea622f306f10f51626a/";s:11:"script_name";s:27:"/www.casavelez.co/index.php";s:4:"skin";s:5:"admin";}