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General Questions

General questions about getting started with SilverStripe that don't fit in any of the categories above.

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[solved] Issue with Fatal error: Object::add_extension() - Can't find extension class for "SiteTreeFileExtension"


3 Posts   183 Views


25 June 2014 at 8:45pm Community Member, 17 Posts


I'm having issue with trying to get the silverstripe to work on my development server. I've just copied the files from the localhost folder into dev server (using webdrive as host) and i did update the host address in _config.php. And have export all the database that i have been working on and import it into my webdrive server's database.

Getting this error which i can't quite work out why:

Fatal error: Object::add_extension() - Can't find extension class for "SiteTreeFileExtension" in /home/sutherlandesign/ on line 535

Dev url:

Anyone be able to help me out on this??



26 June 2014 at 12:42pm Forum Moderator, 149 Posts

Hi Kirsten,

I take it this was all working on your localhost? What is your local dev setup?


26 June 2014 at 2:41pm Community Member, 17 Posts

Hi Cam,

I finally got it to work, it was something to do with host sever that webdrive needs to set up the settings at their end.

All good now. :D