Hello I got some problem when I use 4.3.1

I use dynare 4.2.5 first~~then I use csolve.m to find my S-S
to be the initial value and it can work(only can find S-S then get wrong of eigenvalue) .
But when I use 4.3.1 dynare say:
Impossible to find the steady state. Either the model doesn’t have a unique steady state of the guess values
are too far from the solution.
@@~~why? Could someone help me thanks!
yoyo1.mod (4.27 KB)

Try steady(solve_algo=4) with Dynare 4.3.1, this works. For some reason the default algorithm (solve_algo=2) no longer works on your model.