I just installed the appleScript and presets for the above. (Aperture 3.5.1 and OS 10.9.3). Everything works as expected except for one preset: Auto Curves (Luminance). With this preset, I find that the result I get from running the preset from the menu is different from what I get running the same configuration manually. To illustrate:

This is the result running the preset from the Effects menu:

This is the result using the same settings but clicking the B&W Auto button:

All the rest of the presets show no difference whether run from the menu or manually. I have tried multiple files and it is always the same. 

Has anybody else seen this? Any ideas?