Hello everyone, I am building a transient MODFLOW model with GMS 7.0 using the conceptual model approach. There is a huge problem with the number of stress periods I want to run : - Until I've less than 1001 stress periods, MODFLOW runs, everything is ok - If I have more than 1000 stress periods, MODFLOW aborts immediatly (I mean it is not a problem of convergence) Hereunder the error message : "Excutable started ..... This file is not a GMS MF2K superfile. Assuming NAM file ...... ALLOCATION OF ARRAYS X, Z, IX AND XHS FAILED RETURNED ERROR MESSAGE NUMBER : 41 MODFLOW 2000 finished" I have