Hello Jed, thanks for your input. I tried out using \ instead of / It was not the solution.
But I clicked on some other pictures where it worked and now I have found the problem: The problem where the a umlaut. So ä ö ü should not be used in the filenames of pictures, because the Tiddlywiki on windows will not work with that. Somehow it works on my mac. The solution is not optimal, but works for me right now. Thanks for your response. It gave me the right hint to search for. ;) -- 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 https://groups.google.com/group/tiddlywiki. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/8df474fa-7c04-4c27-9985-46d5ece77525%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.

