Im trying to use Freedpays on a mac running 10.10.5 Yosemite but when I launch the app I get this warning :

"A fatal error occurred. FreedPays can no longer continue safely and will quit

EXCEPTION: St13runtime_error
CDB : Error -30974, can't open database Freedpays in Runaway exception"


 is there any fix?
DO I need to instal an older version or update my OS perhaps?

Thanks for any tips