- Open the AdvancedSearch tiddler and select the Filter tab
- select the More Options icon
- select "Tiddlers modified since the wiki was loaded
- It should give you a list of your modified tiddlers
- Select the Export Button
- Save as JSON
That may do the trick. You can import those tiddler into your wiki once it works again.
There is also an Emergency Save workflow described at: "Emergency Save" - How to Save a Wiki if the UI is Broken
-mario

