Versions of TiddlyWiki before and including 2.6.3 are known to have an issue with the upgrade function. To upgrade these versions you will need to download an empty latest version of TiddlyWiki and import your content into it using the "import" function in the backstage.
This is inverse of the normal way of upgrading: instead of upgrading the core of your TiddlyWiki you are adding all the non-core content of your current TiddlyWiki into a new latest core of TiddlyWiki.
Once you have upgraded your TiddlyWiki to version 2.6.4 or later you will be able to upgrade to subsequent versions in the normal manner.
- Download http://www.tiddlywiki.com/empty.zip (the latest TiddlyWiki version is in there).
- Make a copy of empty.html and either place it in the same directory as the TiddlyWiki you want to upgrade or give it the same name of the TiddlyWiki you want to upgrade and place it in a different directory.
- Load your new empty latest version of TiddlyWiki.
- Go to the backstage area and select import.
- Select the TiddlyWiki you want to have upgraded.
- Import everything from the old TiddlyWiki into this new latest version of TiddlyWiki.
- Save your changed TiddlyWiki and reload it.
- Should work.
This is inverse of the normal way of upgrading: instead of upgrading the core of your TiddlyWiki you are adding all the non-core content of your current TiddlyWiki into a new latest core of TiddlyWiki.
Once you have upgraded your TiddlyWiki to version 2.6.4 or later you will be able to upgrade to subsequent versions in the normal manner.