Error 9 - Timelines

With Legacy closed, into the Legacy\Timelines folder on your hard drive.
LEGACY: Open your Documents folder and browse into the Legacy Family Tree\_AppData\Timelines sub-folder/
LEGACY 7.5 OR EARLIER: C:\Legacy7\Timelines​​

Next, delete the folder for the timelines in the language that's causing the problem and then reinstall Legacy.

Run the Legacy update:
LEGACY: ​​https://legacyfamilytree.com/download-update
Previous version of Legacy: ​Click Here and download the final release (build) of your version. ​

Try the Timeline again.