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TiddlyWiki has been incorrectly saved
TiddlyWiki Community Wiki
This message usually indicates that TiddlyWiki has been downloaded incorrectly - e.g. by using the browser's Save Page As functionality instead of downloading the application.
In rare cases, a TiddlyWiki document can become corrupted (normally not caused by TiddlyWiki itself). The data can usually be recovered by importing all tiddlers into an empty TiddlyWiki.
by Eric
You must never use the browser's Save Page As command to save a TiddlyWiki document. This is because the browser does not save the original document source as read from the stored file -- instead, it creates a re-generated version of the document source based on what is currently loaded into the browser's working memory -- and, because TiddlyWiki document content is dynamically-rendered after loading the file, the browser's version of the document source is different from the actual stored file.
To correctly download and store an exact copy of a TiddlyWiki document on your local system, without any intervening re-interpretation by the browser, you should right-click on a link to the desired URL and then use the Save Target as... command from the popup menu to initiate the download.

