[Antelope] dbdec problem

[Josh Calkins]

Hi all,

I'm having problems getting reasonable output from dbdec, and starting to wonder
if it's a platform or byte swapping issue.  Starting with 50sps data, I'm
applying 3 decimation stages in an attempt to get to 1sps.  Dbdec runs with an
error:

>dbdec -sift "sta=~/STA1/" -wfdir LP DBIN DBOUT LHN=BHN_01,LHE=BHE_01,LHZ=BHZ_01
RT72A_5_s RT72A_5_s RT72A_2_f

Total decimation factor = 50
Processing 1 out of 1 waveform segments.
Looking for waveform file conflicts...OK
fixup_tables: No input sensor rows.
dbdec: fixup_tables() error.

A new seed file and DB are created, but the resulting data look like electronic
noise, with nonsensical amplitudes.  As far as I can tell, my DB is in good
shape and the decimation stage response files I'm using are appropriate.  I'm
running Antelope on an Intel Mac, OS X v 10.5.6, and haven't encountered any
other strange behaviors.

Any ideas?

Thanks,
Josh