I'm sorry, seems like this plugin is not compatible with 1.7.1 you will need to contact plugin developer to resolve this issue. 

ok ,, is there a method to disable it from ftp ,cpanel or database ???

You will need to search this widget in DB: SEARCH_CMP_IndexWidget, it is mostly in the components related tables, and delete it there, then delete the folder from the server. 

i did that ross ,, i got this

http://www.mashaheir.com/index/

OW Debug - Warning Message: call_user_func(SEARCH_CMP_IndexWidget::getStandardSettingValueList) [function.call-user-func]: First argument is expected to be a valid callback File: /home6/mashahei/public_html/index/ow_system_plugins/base/components/drag_and_drop_panel.php Line: 67

OW Debug - Exception

Message: Class SEARCH_CMP_IndexWidget does not exist File: /home6/mashahei/public_html/index/ow_system_plugins/base/components/drag_and_drop_item.php Line: 207 Trace: #0 /home6/mashahei/public_html/index/ow_system_plugins/base/components/drag_and_drop_item.php(207): ReflectionClass->__construct('SEARCH_CMP_Inde...') #1 /home6/mashahei/public_html/index/ow_system_plugins/base/components/drag_and_drop_item.php(92): BASE_CMP_DragAndDropItem->checkComponent('SEARCH_CMP_Inde...') #2 /home6/mashahei/public_html/index/ow_system_plugins/base/components/drag_and_drop_index.php(107): BASE_CMP_DragAndDropItem->setContentComponentClass('SEARCH_CMP_Inde...') #3 /home6/mashahei/public_html/index/ow_smarty/template_c/04419cca0c1503e022368d7d1822005610b5677e.file.drag_and_drop_index.html.php(106): BASE_CMP_DragAndDropIndex->tplComponent(Array, Object(Smarty_Internal_Template)) #4 /home6/mashahei/public_html/index/ow_libraries/smarty3/sysplugins/smarty_internal_templatebase.php(180): content_5405723f9efc22_43592592(Object(Smarty_Internal_Template)) #5 /home6/mashahei/public_html/index/ow_core/view_renderer.php(101): Smarty_Internal_TemplateBase->fetch('/home6/mashahei...') #6 /home6/mashahei/public_html/index/ow_core/renderable.php(263): OW_ViewRenderer->renderTemplate('/home6/mashahei...') #7 /home6/mashahei/public_html/index/ow_core/component.php(80): OW_Renderable->render() #8 /home6/mashahei/public_html/index/ow_core/renderable.php(250): OW_Component->render() #9 /home6/mashahei/public_html/index/ow_system_plugins/base/controllers/component_panel.php(56): OW_Renderable->render() #10 /home6/mashahei/public_html/index/ow_core/request_handler.php(271): BASE_CTRL_ComponentPanel->render() #11 /home6/mashahei/public_html/index/ow_core/application.php(327): OW_RequestHandler->dispatch() #12 /home6/mashahei/public_html/index/index.php(73): OW_Application->handleRequest() #13 {main} Type: ReflectionException

it's still there in the database do the search again and delete it from all the tables it can be found

Topic was moved from Installation Troubleshooter and Server setup.

sounds like it's just a rename

I think maybe this solve the problem,go to /home6/mashahei/public_html/index/ow_plugins/search/init.php

open it in an editor and go on line 113 and change BASE_CLASS_ConsoleItemCollector to  BASE_EventCollector

Good luck

i had same problem 
to remove the plugin 

i first removed it from plugins folder
that let me back to admin plugin page leave page  open
i then re uploaded the plugin back to plugin folder then 
in admin click disable plugin 

You need to remove it from the components tables as well as this plugin creates widget,

Do the search in phpmyadmin for SEARCH_CMP_IndexWidget it will show in which other tables you can found this plugin remainders.