problem convertign segy to sac

Hi, I got data from a rt130 digitizer, I convert reftek data to sego: >> ref2segy --f DATA_FOLDER and after that to convert all the files to sac: >> segy2sac -d SAC/ R*/* segy2sac: Version Number 2002.059 converting R009.01/13.009.00.24.13.B3E1.1 ==> SAC//13.009.00.24.13.B3E1.1.sac Abort trap: 6 >> Am I missing a file with header info or something else? I am working on a MAC computer running OSX 10.8