Dear All, I am using ANSYS Workbench to do electromechanical simulation (piezoelectric materials). I need to get the Z VS frequency plot for my resonator using Harmonic analysis, but when I run the simulation I get the following error message: UNABLE TO OPEN FILE.RST Does anybody know the reason? Is it a licencing fault or a bad commands entered? Many thanks Miss Ghazal Hakemi Microsystems and Nanotechnology Center Cranfield University Cranfield, Bedfordshire