Problem with Make_grid

Good morning, Croco community.

I am new to the Croco environment and I am trying to run a model for the first time, however, I had problems with the use of make_grid. I get the following problem. Is it possible to help me solve it?
I appreciate the help.

Making the grid: D:\05_Programacion\Cocro_2025\02_Carp_trabajo\CROCO_FILES\croco_grd.nc
Title: BahiaLaPaz Model
Resolution: 1/52 deg
Do you want to use interactive grid maker ?
(e.g., for grid rotation or parameter adjustments) : y,[n] n
Create the grid file…
LLm = 77
MMm = 114
Fill the grid file…
Compute the metrics…
Min dx=1.9288 km - Max dx=1.9599 km
Min dy=1.9292 km - Max dy=1.9598 km
Fill the grid file…
Add topography…
CROCO resolution : 1.94 km
Topography data resolution : 0.442 km
Topography resolution halved 3 times
New topography resolution : 3.54 km
Processing coastline_f.mat …
Do you want to use editmask ? y,[n] y
Editmask:
Edit manually the land mask.

spherical has the following dimensions (input order):

  1. one = 1
    spherical loaded into an array of size: [1 1]
    mask_rho has the following dimensions (input order):
  2. eta_rho = 116
  3. xi_rho = 79
    mask_rho loaded into an array of size: [79 116]
    hraw has the following dimensions (input order):
  4. bath = 1
  5. eta_rho = 116
  6. xi_rho = 79

hraw loaded into an array of size: [79 116]
Unrecognized function or variable ‘C’.
Error in editmask (line 283)
xcst=C.Icst;
Error in make_grid (line 225)
editmask(grdname,coastfilemask)

Hi,
it seems that the error occurs when trying to load the coastline from M_Map? Did you download this toolbox from the CROCO website Download – Croco? If you haven’t downloaded it, please do so and run start again.