Thanks 
I’m not sure if this is the issue, but I’ve noticed my land_cover_frac file which I got from Jasmin on another helpdesk ticket here: 2014 timeslice using Archer2 - #8 by hannahbryant /gws/nopw/j04/cmip6_prep_vol1/cmip6_ancils/data/ancils/model_derived/ukesm1.0_historical_r2i1p1f2_u-bc292/n96e/clim_2005-2014 gives me a core dumped error so I think this file is erroneous. Do you know where I might be able to get another copy of this file?
Thanks,
Hannah