The size of the displacement vector in the .ESAV file is 36510.  It     

 does not match with the size of the displacement vector in the current  

 analysis which is equal to 37158.  Please send the data leading to      

 this operation to your technical support provider, as this will allow   

 ANSYS, Inc to improve the program.

*** ERROR ***                           CP =     285.716   TIME= 16:38:11

 File example.esav ( needed for prestress effects ) does not exist.      

做模態分析一開始還是好好的，同樣的命令流算了幾遍之后再運行就出現了這樣的錯誤，真的很懵。。。。