First off, amazing tool! I was planning on using Sprytile for my next project, but the ease of export within Unity and vertex painting ability are really great.
Unfortunately however, I'm having some issues using this with Unity 2019.1 and also checked with 2018.3.0f2, both in fresh projects.
Essentially the behavior is:
1. Make simple cube mesh as per the tutorial's tileset.
2. Export with default settings.
3. The exported model's embedded material seems to be incorrect: the texture is missing.
I can partially workaround this, by 'Extracting the Material' as per Unity's inspector, and then assigning the exported texture (that appeared on MeshEdit export) to the Albedo. Which adds some time, but if I were to use custom shaders, I'd have to do this anyway.
The problem is, I can't seem to get the Vertex Colours painted on to appear no matter what I try. I suspect this could be a conflict with a newer version of Unity? I will try 2017 next. I suppose, I could potentially model in an older version of Unity if absolutely necessary.
Tiny final note: is it possible to change the hotkeys or disable the 'tilemap painting movement' WASD feature? It makes it hard to rotate the view while painting.
I tried looking for a proper support / contact email but couldn't find one so apologies if this is the wrong place!
Thanks for any help. I'd love to use this tool for my next project, it's really fantastic.