ERROR 308312 ** Velocity/pressure switch-over By part weight (excluding runners) value is not specified.
Please check the value and run the analysis again.
You have set up to run a Microcellular injection molding analysis, and you have selected to switch from velocity control to pressure control By part weight (excluding runners), but you haven't specified the part weight. Enter a value between 0 and 1e+006. A common value for this is 90% of the weight of the part (excluding runners) produced from a regular injection molding. For example, if the part weight produced from a regular injection molding is 1000 g, then a typical value to enter would be 900 g.