exec-program-wait problem with freeradius 2.0.3

Hi, I'm carrying out tests with 2 versions for freeradius 1.1.3 and 2.0.3 . I'm trying to use Exec-Program-Wait to run a script to do some extra checking. Both setups use the same MySQL database All works well in version 1.1.3 but the script does not get called in version 2.0.3 The SQL statements generated with both the 1.1.3 and 2.0.3 are identical and return the same result. But version 1.1.3 of freeradius runs the script while version 2.0.3 does not. Any ideas? Thanks in advance, Emmanuel