SectionEx - Load More Articles not working

Joomla 3.2, never installed SectionEx before, so can't state it would have worked in earlier joomla versions.
When i click on load more articles nothing happens in User Interface

If i look at js console, after my click, it reports:

Refused to set unsafe header "Content-length" index.php?option=com_sectionex&view=category&id=11&Itemid=539:1
Refused to set unsafe header "Connection" index.php?option=com_sectionex&view=category&id=11&Itemid=539:1
Failed to load resource: the server responded with a status of 500 (Internal Server Error) http://rec:81/index.php?option=com_sectionex&lang=none&Itemid=539&tmpl=component&no_html=1&format=sejax&uid=1384430077967

looking deeply at server errors i found one fatal error, details below:

Fatal error: Class SectionExViewCategory cannot extend from interface JView in C:\wamp\www\components\com_sectionex\views\category\view.sejax.php on line 28
Call Stack
# Time Memory Function Location
1 0.0006 245816 {main}( ) ..\index.php:0
2 1.0560 3354888 JApplicationCms->execute( ) ..\index.php:40
3 1.0560 3355056 JApplicationSite->doExecute( ) ..\cms.php:264
4 1.1557 9714728 JApplicationSite->dispatch( ) ..\site.php:208
5 1.1584 9778248 JComponentHelper::renderComponent( ) ..\site.php:178
6 1.1659 9834456 JComponentHelper::executeComponent( ) ..\helper.php:331
7 1.1663 9860760 require_once( 'C:\wamp\www\components\com_sectionex\sectionex.php' ) ..\helper.php:351
8 1.1759 10523160 JControllerLegacy->execute( ) ..\sectionex.php:50
9 1.1759 10523288 SectionExController->display( ) ..\legacy.php:722
10 1.1763 10524440 JControllerLegacy->getView( ) ..\controller.php:74
11 1.1763 10524864 JControllerLegacy->createView( ) ..\legacy.php:855
12 1.1776 10579304 require_once( 'C:\wamp\www\components\com_sectionex\views\category\view.sejax.php' ) ..\legacy.php:604


Hope u can give some instruction to fix it cos i really appreciate this cmponent.

THanks in advance