I'm not sure if I should post this in this topic or in a new topic in the "Bug reports" section, but I'll try posting it here first.
My OS is Windows 7 Home Premium 32-bit, & my version of PDN is 3.5.10 portable. Anyway, on 4-25-2012, I downloaded "Simulate color depth" from here. It works very well mostly, except for this bug. You need to have the "Dither" box checked. Then, if you try to use "Stucki" dithering (which doesn't seem to work at all), it will ignore your attempt to use it, & changing the dithering from "Stucki" to a different dither crashes the plug-in. I'm surprise