求助LSDYNA定义材料错误

*** ERROR *** CP = 5.031 TIME= 15:12:40
The option of DENS on the MP command is either not available for this
version of ANSYS or the appropriate product was not selected for this
session.
Contact your ANSYS support person for more information.
*** ERROR *** CP = 5.203 TIME= 15:12:53
The option of EX on the MP command is either not available for this
version of ANSYS or the appropriate product was not selected for this
session.
Contact your ANSYS support person for more information.
*** ERROR *** CP = 5.266 TIME= 15:12:55
The option of NUXY on the MP command is either not available for this
version of ANSYS or the appropriate product was not selected for this
session.
Contact your ANSYS support person for more information.
我是按照教材来做的，可是就是不行，是不是我的软件哪个地方装的不对还是设置的不对啊？请求各位大侠指点迷津