Jonas 0 Report post Posted October 18, 2017 Often when I initiate a PEST run with SVD-assist and NOPTMAX = -2 or -1 the process ends with the message "cannot find Jacobian array file". The process starts with a calculation of the Jacobian matrix: But ends like this: It always works when I run the model without pilot points. A forward run with the pilot points also works. I have managed to run both a parameter estimation and NSCM with SVD-assists before with the same model constraints but when experience this problem when I attempt to make changes in the model. Ideas on how to solve this issue? Share this post Link to post Share on other sites
