Hi @gnashy_maw – welcome to Blender Artists!
I just saw your post. I’m running Blender 2.9 alpha and my update of Ghost Frames still works fine:
In this image, I set a frame range (101-110) and clicked the Ghost Frames button to generate the ghost frames. See if you can do something like that.
Here are some other things to check:
- Did you set up the Ghost Frames Path correctly (i.e. to a legitimate directory)? See the earlier posts in this thread for an example.
- Is Opacity set to 0.50?
- Are you sure you have some moving objects? (In my example, I almost didn’t; I had accidentally set the interpolation of my cube to Constant and the object didn’t look like it moved.)
EDIT: One last thing I just thought of…is your 3D Viewport in Camera mode? This add-on only works in Camera mode AFAIK.