Fast feedback: It looks like tiddlyfox did the job.
I can save my wiki again, close it and open it to see that the special characters are still there... I'll test it today with bigger tiddlers and changes, and I'll tell you the word of it. Thank you both for your counsels! -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/tiddlywiki. For more options, visit https://groups.google.com/d/optout.

