Tinderbox v9 Icon

Tinderbox files don't open on double-click

If you definitely know the file is a Tinderbox document and are in a hurry:

If this does not work, or when you have more time to fix things properly, follow this procedure to (re-)inform Finder how to handle files with a '.tbx' extension.

Read what to do if you get a "Tinderbox was unable to parse this file" message.