Not all versions of SCI support the patchdir setting. I'd be happy to investigate, but I think it's save to say SCI1 (which LSL1 uses) does not.
Thanks, now I have something to do other than bathe.
Edit: okay going by the simple fact that the terps aren't packed¹ and contain the word "patch" at least once, those who support patchdir should contain that as well, near the word videoDrv. As such I can conclude that LSL1 (SCI1-early?) through LSL3 (SCI0) don't support patchdir at all, LSL5 (SCI1-late?) does have patchdir support and LSL6 (SCI11) adds moviedir on top of that.
¹ German LSL5's SCIDHUV was in fact packed but the word was clearly visible in the expected place.
Well, that didn't take long. See ya in the tub folks.