So I copied the "Complex" folder structure from the "Particles 1k.zip" that was included in the download, and while the "Visuals" tab does display the "Complex" selection and all the folders within "Complex", it does not show any of the pngs for the particles and they cannot be selected (since there's nothing to select).

Thanks!

You no need to copy nothing since from last version of the APP all particles are added in the app folder.

If you are using Windows, run the app as administrator. If you are using Mac is a bug we need to fix, btw, you still can load using the "sprite" button on the right and load the image for the particle you want.

Thanks for the quick response!  Apparently something went wrong when I moved my unzipped folder from one location to another which is why I ended up copying the complex particles (because during the folder move they didn't copy for some reason).  I downloaded the zip again and it works great, thanks!