Problem:

On occasions after having compiled a COBOL program the following warning message has been encountered: "The program has been modified since the last compile" ; this despite the program apparently not having been modified in any way.

A few things to check are:

1)  Are there different versions of the program in different workgroups:  perhaps the wrong version of the program has been inadvertently changed?

2)  Has the program been modified by another person?

3)  Is the debugger running when the program is recompiled?

4)  Is any synchronisation process running at the time?

Resolution:

If none of the above apply then go to Options > Edit > Profile tab > check the  option "Detect ASCII end of file" > try recompiling again.