打开flightloads出现错误提示
Error initializing Flightloads. The Nastran command [ c:\MSC.Software\MD_Nastran\20121\bin\mdnast20121.exe ] does not exist. This is normally defined with the [ Alocalcommand2012 ] environment variable defined in the [ P3_TRANS.INI ] file in [ p3_home ] and is used as the Nastran Server invocation.
请问是什么原因呢?怎么解决?