Have encountered this a couple of times. Solutions offered are:

1. Revert to backup of last successfully loaded config file.
2. Delete config file and start fresh.
3. Do nothing and try again

None of these solutions work. The only fix is to uninstall then reinstall Tixati. Running 64-bit Tixati 2.56 on an 8Gb HP Pavilion running latest version of Windows 10. Any suggestions?

Regards
Kevin