search conflict

Hi,

My search function stopped working on the site and it was only when I uninstalled the iproperty plugin did the search box start working again. Can you tell me what I need to do reactivate the plugin and to make sure that the search button works too. The error I get is a HTTP Error 500 (Internal Server Error).

Thanks

https://www.ads-software.com/extend/plugins/intellectual-property-basic/