3D model showing up as a line?

Operating system: Windows 10
Slicer version: 4.11.2
I am trying to get a volume rendering of my image stack, but it just shows up as a single weird black line (see screenshot)? How do I fix this?

It seems that you don’t have an image stack but you loaded a single image slice. Use the DICOM module for loading DICOM images and SlicerMorph extension’s ImageStacks module to load a TIFF/PNG/JPG stack.

I do have an image stack (I can scroll through the images) that I loaded as a nrrd file

The image that you loaded is a single slice, because it appears as a single line in the yellow slice view. If you load a 3D image volume then you see a 2D image in all slice views.

Ahh I see what you mean. I’m going to start from scratch and see if it does that again.