Some AU plugins - Crash To Desktop

[Stroudy]

Mavericks 10.9.5
Reaper 4.731 rev87a685
64bit

1. Empty project > new track
2. Insert Kontakt 5 AU
3. Insert AU Apple Delay
Crash To Desktop

Notes:
My settings: Reaper starts with an Empty project.
Using Kontakt VST (not AU) does not give same result.
All other AU apple plugins have same effect.
Kontakt version 5.3.0

I don't use AU apple plugins, but I just happen to run these whilst testing something else.

It' no big deal for me, but it might have consequences in other areas I have not yet tested.
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