You should know that HDevelop performs some changes of system parameters of HALCON by calling the operator set_system (see the reference manual). This might cause the exported program not to produce identical output. If such a problem arises, you may query the system parameters by means of get_system in HDevelop after or while running the original HDevelop version of the program. Depending to the problem, you can now modify relevant parameters by explicitly calling the operator set_system in the exported program.