Hello I got this error when switching to default theme, although before that, I was working on a new theme, as our old theme was modified heavily and it is not updated anymore.

But I got this persistent error, so I switch to Default theme, and still got this error
 

[[Template forums/front/forums/topicRow is throwing an error. This theme may be out of date. Run the support tool in the AdminCP to restore the default theme.]]

I clear cache and delete datastore files, still got this error, any ideas?

-Allan

Generally, that would be caused when something is trying to load with topics that is breaking. So would suggest disabling any 3rd party items you have running first of all. 

 

Generally, that would be caused when something is trying to load with topics that is breaking. So would suggest disabling any 3rd party items you have running first of all. 

I disabled all plugins already

-Allan

I end up, re-copy the live IPB to the dev site.

And dev site is working fine now.

-Allan

glad to hear you got things working, Nigel