Manga Studio EX 4 Problem: When I export my screentones are grey instead of dots. How can I fix that?
Before you export change these settings and this problem will never happen again and all your tones will export as tones from now on. Click Tone Settings as marked in Red in the first image. Then Click Tone Settings Button.
A new dialogue box will appear. Click the options- Output All In Halftone Dots and Adjust according to output Resolution.
Your exports should now come out clean like the third image from now on. No more random grey areas amongst clean tones, just all tones and dither as it should appear.
The other option is to right click and rasterize all the tone layers. Hopefully that will help other MSEX4 users out there