Trying to upgrade OS property

Hello,

I want to upgrade a 2.5.28 website with OS property to the latest releases of everything and I made a 1:1 copy of the site on a new domain to do the upgarde there and move it afterwards to the actual domain.

But now I get an error on the development domain, Fatal error: Class 'MultilangstatusHelper' not found, any idea how to resolve that?

The development domain is www.ontwikkeling.es running Joomla 2.5.28 with OS property 2.9.1

Hi Edwin,
OS Property was no longer to support for Joomla 2.5.28 from 2015. So i advise you to upgrade Joomla to 3.x to make OS Property to work properly.
Thanks
Dam

That is what I'm trying to do. But Icannot upgrade because of that error. So I need to find a way to work around that to upgrade Joomla and after that OSproperty to the latest version.

Hi Edwin,
You can raise new ticket on category OS Property. I will check your case to see if i can help you something. .
Thanks
Dam