runtime error with 64 bit machine

hi, i compiled and created an executable for .for program with 32 bit OS. when i ran the exe on a 64 bit OS it shows runtime time error(floating point stack fault). but the same exe runs fine in my 32 bit OS. I also found the error occured at the line where the variables was declared REAL. Any help on this issue is much appreciated.

You are in the forum thread for FTN77. If you are indeed using FTN77, try downloading the free personal edition of FTN95 to see if you get the same problem. If there is a problem with FTN95 then we will aim to fix it. FTN77 bugs cannot be fixed.

i am making use of personal edition of ftn95.It was my mistake to post the question under ftn77. Any help on this issue is much appreciated. Thanks in advance

FTN95 version 5.40.0 personal edition compiles F77 and F90 programs fine on Windows 7 Home Premium (64bit)..