The download link needs access permission, I requested access but with no response. Unless this needs to be restricted, the easiest fix is to set "anyone with the link" permission.
a) The run from climatology to create the template restart worked.
b) This run has half the baclin time step of the run from climatology.
An initial NaN can be from NaN in the input files, but it is also often from batrop being too large.
Typically we use about 75% of the minimum CFL:
COAPS 6268> cat depth_GLBt0.72_15_batrop.b
bathymetery from 2-minute NAVO/NRL DBDB2 global dataset; NGDC World Coast Line
i/jdm = 500 382
plon,plat range = -286.19775 433.79773 -77.94000 89.80036
landmask Black/Red/Baltic Seas, other narrow inlets; B-grid (CICE) fixes
Merged with depth_GLBt0.72_87 coastline in Antractic; 1st row all land
gsp: min,max = 14.004 283.508
cfl: min,max = 90.773 3949.153
We are using batrop=56.25.
In general, you want this as large as possible and if it is too large the model will immediately blow up (so it is easy to set the right values).