having a mistake after sdrsplit data

Hi~ I am a operator in Seismology Center, Taiwan. I use Command as following (in Linux Fedora 10,passcal is the new version): >qmerge -D m -T -N TW -o datatmp -f 2009.220.00:00:00.0000 -s 24H SGSB.HHZ.2009.219 SGSB.HHZ.2009.220 SGSB.HHZ.2009.221 make a datatmp file that the size is 25968640 > sdrsplit -C datatmp then generate 2 files, one is SGSB.TW.HHZ..D.2009.220.000000 (the file size is 11255808), the other is SGSB.TW.HHZ..D.2009.220.195393 (the file size is 0), I also run the same data and steps in Unix system, the file size (SGSB.TW.HHZ..D.2009.220.195393) isn't zero. I'll send data to you via email. Thanks a lot.