BulbOff isn't a key, it's a basic state property for a light object in
FP. I don't know what changed between your working 'timebombed version' and the last release. Do your tables play correctly in the last release if you manually define each error property? I mean do the lights turn on and off like they should?
Thanks for your reply. When I was changing the script I was sure I was defining them incorrectly (I have no idea when it comes to
FP scripting), but just tried to remove the error to see if the table was playable afterwards. After it reported a different error the second time, I figured I was at least removing the error

Everything used to work, as the reports at Wine's
appdb page for Future Pinball show.
Just to be clear, I'm not after a solution to fix my problem, rather asking for a solution as to why it's incompatible in Linux for all Linux users.

I thought that people who know
FP scripting (which is why I posted here) might be able to look at it and say, "Oh, that's because those properties are defined by
FP in this way", so we could nail down why it's not working under Linux. It's not just me having the problem, as the thread I linked to above shows.