Flux和simulink联合仿真报错求助！！！

Gordonw

在做联合仿真的时候报以下错误，请问各位大神这是什么原因，谢谢！
所做的仿真是天源博通官网里面给的那两根导线的例子，参照《电机有限元分析教程》也找不出原因，尝试过flux2018和matlab2018a版、flux2019和matlab2019a版都不行
An error occurred while running the simulation and the simulation was terminated
Caused by:
Error reported by S-function 'Flux_Simulink' in 'CABLES/Coupling with Flux':
Error while calling solveCurrentStep : Can not execute the following command :
solveCurrentStep()
executeAlgo_c : Execution failed.
Failed execution
Component:Simulink | Category:Block error
Error reported by S-function 'Flux_Simulink' in 'CABLES/Coupling with Flux':
Error while calling closeMultiPhysicsSession : Can not execute the following command :
Scenario['SIMULINK_MP_SCENARIO'].closeSessionMultiPhysics()
Command not available
Open a multi physic session before