I am experiencing a problem when running a certain REXX module.  If I
call the module from one program, it works fine.  From another, it hangs
with an error 4 Program Interrupted (The system interrupted execution of
a REXX program because of some error, or by user request.)  Both
calling programs are also REXX.  I certainly didn't request the hang,  
and there are no other error messages that indicate a reason for the
hang.  If I reboot my machine and try again, it hangs in a different
location.  I am running Quercus Personal REXX for NT under Windows NT
3.5.  I get the same results regardless of whether the module is compiled
or not.

Does anyone have any idea why I might be experiencing this hang or
provide some idea where to look for the source of the problem?  Tracing
the execution provides no insight as to the cause.  I thought that the
problem might be program size related, but the program that it runs under
is much larger than the one it fails under.

Any assistance at all will be greatly appreciated.

I am experiencing a problem when running a certain REXX module.  If I
call the module from one program, it works fine.  From another, it hangs
with an error 4 Program Interrupted (The system interrupted execution of
a REXX program because of some error, or by user request.)  Both
calling programs are also REXX.  I certainly didn't request the hang,  
and there are no other error messages that indicate a reason for the
hang.  If I reboot my machine and try again, it hangs in a different
location.  I am running Quercus Personal REXX for NT under Windows NT
3.5.  I get the same results regardless of whether the module is compiled
or not.

Does anyone have any idea why I might be experiencing this hang or
provide some idea where to look for the source of the problem?  Tracing
the execution provides no insight as to the cause.  I thought that the
problem might be program size related, but the program that it runs under
is much larger than the one it fails under.

Any assistance at all will be greatly appreciated.

I found a work-around for my problem, but it doesn't explain it any better.  I added
a CALL ON FAIL to my module.  In the FAIL routine, I simply display a message and
pause 5 seconds.  FAIL is called irregularily and only once in any exection of the
module (shortly after it starts).  I am certainly not pressing CTRL-BREAK, but the
module is complaining that someone or something is.  Any suggestions?

REX0004: ***Program interrupted***

EXPLANATION: The system interrupted execution of a program
             because of some error, or by user request.
ACTION: Trap interrupts via CALL ON HALT or SIGNAL ON HALT.

Have you tried the CALL ON HALT or SIGNAL ON HALT to see where the offense is?

Gaylen Fraley                         \\||//
Team OS/2                             ( .. )
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