It appears that the simulated series by stoch_simul with simul_replic>0 is not saved in the supposed location indicated by the manual. The file is saved in the binary file named “OutputFILENAME_simul” in folder “FILENAME”. Probably “Output” is intended as a folder name.
I am using Dynare 5.1 on Mac OS 12.3.1.
This is an example code that I reproduced the bug:
var x; varexo e; model(linear); x = 0.9*x(-1) + e; end; shocks; var e; stderr 1; end; stoch_simul(order=1,periods=200,simul_replic=10,nograph);