I'm doing my first project in Blender. I started in 2.82 and am now using 2.90. I'm making a frost sword where I want a nitrogren mist to fall down from the blade's edge defined by a vertex group. I succeeded in that while modelling, but then I did some changes to the model, and now I can't get the mist to work again. Even if I add completely new simple object to the scene and do quick smoke and bake, nothing shows up. If I open a new blender file and do quick smoke, it shows up fine, so I assume some scene setting has been messed up. It's been driving me nuts for hours now, so any help will be greatly appreciated.
No one , Not the blender file , not the model , not the primitives , not the simulator None of them is at fault.When you make a simulation , you also bake it , and im sure you also did that , if you bake the simulation , what it does is that it records the simulations animation so that it doesn't have to do heavy calculation it does while making the simulation for the first time , so try rebaking and come back again
Turns out the problem was caching. I had a cache left over from the last attempt I made at a smoke simulation, and according to the warning in this documentation, Blender doesn't like multiple caches.
So the solution was to Move the Blender file to a new folder and add the smoke effect there, then it ran perfectly. For some reason it wasn't enough to delete the old caches, I had to start over in a new folder.