Downsample with approximate pixel size does not work [bug]

Hi,

Downsampling in v4.6.2 using the “approximate pixel size” option does not work - it fails with the appended error.

The same data works fine if I set the box size via Fourier crop.

Just in case it was an issue with fp16 output, I tried with and without fp16, but the same error occurs, so I suspect this is a bug.

Cheers
Oli

Traceback (most recent call last):
  File "cryosparc_master/cryosparc_compute/run.py", line 129, in cryosparc_master.cryosparc_compute.run.main
  File "/home/exx/cryosparc/cryosparc_worker/cryosparc_compute/jobs/extract/run.py", line 896, in run_downsample_particles
    extent = N_crop * particles_dset['blob/psize_A'][0]
TypeError: unsupported operand type(s) for *: 'NoneType' and 'float'