I have a fortran programme, i'm use silverfrost plato IDE to compile the programme. It is successfully compilation. After that, I'm using windows command prompt, cmd to run its executive file, but it occur an run-time error which is error 29, call to missing routine: E04JYF. I found that it can't link to fortran win32 library and I guess my NAG fortran library for win32 application is not complete. So, i try to download the fortran library from http://www.nag.co.uk/downloads/fldownloads.asp . After installed, its cannot find a valid licence key for .dll file. i try to create a licence file, and set the NAG_KUSARI_FILE environment, but the programme still cannot run successfully. Any help is appreciated. Thanks very much.