500 bootstrap error in Popups

Hi, please see der-eule-verlag.de/2013-11-08-11-53-34/b...ory/1-antiquarisches . If I try to open a picture for popup picture I again get an 500 bootstrap error. I have joomla 2.5.18 installed. According to the component forum it isnot a fault of the component. What can I do?

Thks and regards Helmer

Thing it that bootstrap if fully supported from j3 , can you consider going with j3 ?

Never thought of it until the end of 2014? I could try it with www.der-eule-verlag.de . Is there any migration help or documentation. I do not have time to start the site all over from scratch. The Leipzig Book fair is coming in a fortnight. On the other hand, I have a security disk running on my server, so if something goes wrong I can go back to the former installation. What do you think? Regards Helmer

That is done automaticly, go to Joomla!Update , click on Options, for "Update Server" select "Short Term Support". Save and go to control panel , log in log out until joomla reports there is update. When you update site sill become j3.x.

(P.S. I think we had some changes in index.php of template, now when you have j3 you can return original)

Hi, automaticaly doesn't work. I try by package upload 3.2 and German Language. In case this works, do I have to upload something from the template Newsportal 3.x?

SHORT TERM ERROR: Fatal error: Call to undefined method JRegistry::getValue() in /www/htdocs/xxxx/xxx/components/com_jcomments/libraries/joomlatune/joomla/jversion.php on line 35

It is recommended you replace php files especilay index.php , you don't have to replace files you changed like template_css.css, layout.css...