I have upgraded dokuwiki recently and now many links in Recent changes are broken because pages which have periods in the url (my wiki has many pages with names that include dates in the format dd.mm.yyyy) are apparently saved as media instead of page. Or at least their "mode" is set to media.
The showFileName function then displays the link as a media link instead of page link, which of course doesn't work as there is no media file with that name.
I have used the Search Index Manager to rebuild my search index (just in case) which didn't help.
This happens also for newly created pages with periods in their name.