Can't exec a program from another

[Guest STAN1ZX]

I have program "A" which when started sends an exec. to programs "B" and

"C".

Pgm B gets started but not pgm C.

I have all the permissions opened up as far as I can see, but it still does

not work.

I can click on pgm C at its location and it will start.

What or where can I look for something that might not be set ?

Thanks

Stan