Error in alignment.py DetectorTranslationAlongBeam

find_shifts returns an error when testing on the following set of data: /data/id19/inhouse/nemoz/align Here it is:

lbs051:/sware/exp/scisoft/p_cn % python alignxc.py

Traceback (most recent call last):

File "alignxc.py", line 80, in

yy, xx =  cor.find_shift(radios, xc_positions)

File "/nobackup/lbs0511/tomwer/0_5/orange3venv/lib/python3.7/site-packages/nabu/preproc/alignment.py", line 655, in find_shift

f_vals = cc[pv, ph]

IndexError: index 2048 is out of bounds for axis 0 with size 2048