Hi! I am trying to run a very simple unisize, constant discharge, single branch model in elv to find the equilibrium solution. The inputs look like the following:
 input.sed.dk =[2]./1000; input.ini.Fak = [1]; input.ini.fsk = [1];
input.ini.slopeb = 1*1e-4; input.ini.initype=1;

input.bcm.type=1; input.bcm.NFLtype=1; input.bcm.NFLparam=[1e-4,0.05];  Qbk0_base = 0.05; input.bcm.Qbk0_tot = 0.05;

input.bch.uptype=1; input.bch.Q0=2000; input.tra.cr=2 %Engelund Hansen; 

input.mor.gsdupdate=7;

input.grd.L=100e3; input.grd.dx=2000; input.frc.Cf=0.004; input.mdv.dt=86400


When I run this (along with the other inputs) input set up to calculate the equilibrium with initype=1, the get_equivals_V gets an error - "Error using optimoptions
Invalid solver specified. Provide a solver name or handle (such as 'fmincon' or @fminunc).
Type DOC OPTIMOPTIONS for a list of solvers."

if I choose initype=2, then the substrate runs out. I am not sure which parameter I am putting in wrong. Any help would be much appreciated.