IDL not seen - undeclared type

Question

CORBA help please for a novice
There is probably quite a simple answer to this question.
I have a lot of idl files, i need to generate java code from them. I am using forteEE
The first file shows up as ok in the designer, and i have been able to compile it and generate the information that i need.
The rest of the files are stared as red and there is a parsing error assoicated with them.
When i try and compile the error is allways somthing like...
e:/lsd/corbadesign/Campus.idl [10:1] School is an undeclared type.
typedef sequence <School> isSituatedIn_def;
All the idl files are in the same directory and it seems that although they are #included at the top
the compiler or parser never seems to find them.
I am using the default 1.3 compiler.
If you could point me in the right direction so the files can see oneanother then it would be much appreciated.
The file that compiles is this
// AssessmentDetails.idl
//Source file: e:/lsd/corbadesign/AssessmentDetails.idl
#ifndef __ASSESSMENTDETAILS_DEFINED
#define __ASSESSMENTDETAILS_DEFINED
interface AssessmentDetails;
interface AssessmentDetails {
     attribute any weighting;
     attribute any type;
     AssessmentDetails createNew (
          in string name,
          in long type,
          in long percentage
     any update (
          in string name,
          in long type,
          in long percentage
#endif
And one of the files that is not parsed is this
// ProgramOfStudy.idl
//Source file: e:/lsd/corbadesign/ProgramOfStudy.idl
#ifndef __PROGRAMOFSTUDY_DEFINED
#define __PROGRAMOFSTUDY_DEFINED
#include "School.idl"
#include "Student.idl"
#include "ProgramCourse.idl"
interface Course;
interface ProgramOfStudy {
     typedef sequence <Student> isRegisteredOn_def;
     typedef sequence <ProgramCourse> isPartOf_def;
     attribute isRegisteredOn_def isRegisteredOn;
     attribute School has;
     attribute isPartOf_def isPartOf;
     any getCourses ();
     any assignCourse (
          in Course course,
          in boolean core
#endif
Cheers in advance^

Answer 1

School idl
This exists as its own file,
// School.idl
//Source file: e:/lsd/corbadesign/School.idl
#ifndef __SCHOOL_DEFINED
#define __SCHOOL_DEFINED
#include "Campus.idl"
#include "ProgramOfStudy.idl"
#include "Lecturer.idl"
#include "Student.idl"
#include "Course.idl"
interface School {
     typedef sequence <ProgramOfStudy> isStudiedAt_def;
     typedef sequence <Lecturer> teachesAt_def;
     typedef sequence <Student> studiesAt_def;
     typedef sequence <Course> isTaughtAt_def;
     attribute isStudiedAt_def isStudiedAt;
     attribute studiesAt_def studiesAt;
     attribute isTaughtAt_def isTaughtAt;
     attribute Campus houses;
     attribute teachesAt_def teachesAt;
     Student enterStudent (
          in long IdentificationNumber,
          in string name,
          in string address,
          in double dob,
          in double startDate
     sequence getPrograms ();
     Student getStudent (
          in long studentID
     ProgramOfStudy createProgram (
          in string name,
          in long programID,
          in string Qualification
     boolean checkProgramNotExists (
          in long programID
     boolean checkStudentNotExist (
          in long regID
     Course createCourse (
          in long courseID,
          in string title
     boolean courseExists (
          in long courseID
     sequence getLecturers ();
     sequence getAllStaff ();     
     Lecturer assignStaff (
          in long staffID,
          in string Title,
          in string Office
     void assignCourse (
          in long courseID,
          in long programID,
          in boolean core
     any getProgram (
          in long programID
     any getCourse (
          in long courseID
#endif