VehicleManager component support

i installed the "vehiclemanager_2_1_free_2011_08_20" in joomla 1.7 and i am getting this error when i click in any car category.

"
Notice: Trying to get property of non-object in C:wampwww1componentscom_vehiclemanagervehiclemanager.html.php on line 1200 Call Stack #TimeMemoryFunctionLocation 10.0007381344{main}( )..index.php:0 20.13255426368JSite->dispatch( )..index.php:43 30.14435781304JComponentHelper::renderComponent( )..application.php:187 40.15566508928require_once( 'C:wampwww1componentscom_vehiclemanagervehiclemanager.php' )..helper.php:156 50.227210168880showCategory( )..vehiclemanager.php:170 60.252210362800HTML_vehiclemanager::displayVehicles( )..vehiclemanager.php:862 "/>
"

this error show up when i click in the buttons "sport, truck, ..." all of them. can you tell me what to do to fix this.

Hi,
Very -= very strange.

That happened for every yours categories ?

Can you give admin access to yours site or to yours demo site - with that we may check where error.
Yours account details you may send with help ordasoft Conatact form

Thanks,
Ordasoft team