Over the weekend, a new version of Astropad went live with a bunch of fixes:
Pressure sensitivity in more Mac apps
Pressure now works in a bunch more Mac apps. We’ve added support for: SketchBook Pro, Corel Painter and Manga Studio. Pressure should now work across nearly every Mac app!
iPad 3 and iPad 4 Fixes
We had some problems with the iPad 3 and 4 that caused a red X to appear when trying to draw. D’oh. We got hands on an iPad 3 and we’ve fixed this bug.
Manga Studio “trails"
Previously if you used Astropad with Manga Studio, you would sometimes get trails at the beginning or end of your stroke. We’ve fixed it!
There are more fixes in there but I won’t bore you with the less exciting ones.
So make sure your iPad is updated and same with Astropad on the Mac. Your Mac App should auto-update but if it doesn’t learn more about how to update.