Mozilla Control Error

Hello everyone,
I have downloaded and installed the latest version of "Mozilla Active X control 1.7.12" from
Added it's component "mozctl.dll" in my vb6.0 project. It's browser is working fine and showing webpage.
But I am getting error "Automation error Library not registered." on getting the html source of the loaded webpage.
I am using codes

MozillaBrowser1.Document.body.innerHtml

I've searched about this error, but not getting any working solution. Which Library is not registered and how to register that? Where i am doing wrong. Please correct me and tell how to get webpage html source code by using Mozilla Control in vb6.

Thanks
Regards,