once again I try to update my site from 2.5.28 to something newer.
Once again means, this is like the 6th try - I always struggle, finally I give up and gather my strength and courage for the next try.
This time I did this:
(that is, using a copy of the site for the update and later switch the domain to this site)
update to Joomla 3.4
The result is this error message:
Fatal error: Call to undefined method Joomla\Registry\Registry::loadJSON() in /www/htdocs/xxxxx/Joomla34/plugins/system/jdownloads/jdownloads.php on line 39
Can anyone help me to get over this step so that I can get to the next problem...?