Hi, We recently upgraded to the SGI v7.4 F90 compilers and some of my code has stopped compiling. Can somebody tell me whether this is legal Fortran90, and whether the problem is with my code or the compiler? Attached is a short test program that illustrates the problem. I get the following errors when I try to compile: f90-1015 f90: ERROR SUB2, File = test.f90, Line = 24, Column = 24 Local-name "A1" must only be referenced once in a rename-list in this scope. ^ f90-1015 f90: ERROR SUB2, File = test.f90, Line = 24, Column = 31 Local-name "B1" must only be referenced once in a rename-list in this scope. The problem happens when I try to use the USE CONSTANTS, ONLY: A1=>A, B1=>B statement for a second routine in the same module. Is this legal F90? What do other compilers think about this? I've written lots of code with this useage and it's never given me a problem before. Were the previous versions of the compiler correct, am I looking at a compiler bug? Catherine -- ------------------------------------------------------------------------- Catherine Moroney phone : (818) 393-3392 Jet Propulsion Laboratory fax : (818) 393-4802 MailStop 169-315 email : [log in to unmask] 4800 Oak Grove Drive Pasadena, CA 91109-8099