Hi all, I'm glad to inform you about new  OpenOpt   Suite release 0.52 (2013-Dec-15):     Minor  interalg   speedup     oofun expression     MATLAB solvers fmincon and fsolve have been connected     Several MATLAB ODE solvers have been connected     New ODE solvers, parameters abstol and reltol     New GLP solver: direct     Some minor bugfixes and improvements Regards, D.