[Koha] languages lost after upgrading from 3.0 to 3.6

[Chris Cormack]

On 4 July 2012 21:59, Gerard Henry <ghenry at cmi.univ-mrs.fr> wrote:
> thanks for your reply
>
> but, as i tried to explain, i'm upgrading from 3.0 where the languages are
> already installed. The corresponding files are here. Except that the
> upgraded 3.6 now doesn't see them
>
Yes, but they are for 3.0.

1/ 3.6.x uses Template::Toolkit not HTML::Template::Pro, so even if it
found them, they wouldn't
2/ There have been literally hundreds (thousands) of changes to the
templates in the years since 3.0. Those generated templates will not
work anymore, even if they were the right syntax

So David is right, you need to regenerate your templates, and you
should do this after every upgrade

Chris