I have been struggling with SF for years, I can no longer test if SF18 fixes issues or not but I am on SF16. When I've upgraded to new versions the bugs have not been fixed and have given up paid upgrading.

I've just discovered that all the versions after 11 crash for me until I start clean. It works for a day or one sesssion then crashes the next time again. All other Audio Software including Audition, Audacity, Acoustica (which by the way has now been my go to quick editor once I couldn't trust SF any more), Nuendo, Reaper all don't have issues. It will get up to the screen to open a new file or create a new one stays open for about 2-3 seconds then shuts down without error every single time until I restart SF clean again.

SF11 does not and is actually very stable in comparison. I've downgraded instead.