adams/car错误 新手求助~~

新手 用MDI_DEMO_VEHICLE模型
仿真simulate--full vehicle analysis--course events--ISO LANE CHANGES
output prefix 填的workshop1a initial veloity 填的70 别的都没动
点OK就出错了
Reading in property files...
Reading of property files completed.
Setting up the vehicle assembly for Driving Machine maneuver...
Setup of vehicle assembly completed.
Simulation is beginning...
Starting analysis #1 of vehicle assembly...
Demand Load: Unknown error number
Could not find F77 solver shared library.
Exiting
ERROR: Cannot load results! File 'workshop1a_ilc.res' not found.
Simulation is complete.
求大神。。。