You could use your browsers dev tools. eg: Chrome has the best built in tools at the moment.
Open your TW with chrome. open the dev tools F12 select the "sources" tab page reload. ... If you are lucky it may tell you more -m -- 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.

