I ran a copy of the filter files through foton to check for errors. Most had no issues, some had filters defined in the body which were missing in the MODULES block (filters which have been removed from the model). Two models reported errors:

    Module DARM_AUDIO section 0: Mismatch betweeen design and coefficients.
    Module MC2_M2_DRIVEALIGN_L2P section 3: Mismatch betweeen design and coefficients.

though looking at the corrected filter file and the original does not show a difference in coefficients, Jim is investigating.

The procedure followed to check for these issues is:

    cd /ligo/home/david.barker/temp
    rm /ligo/home/david.barker/temp/*
    cp /opt/rtcds/lho/h1/chans/tmp/*.txt .
    ls > /tmp/filterfiles.txt
    rm /tmp/fotonresults
    for i in $(cat /tmp/filterfiles.txt);do echo $i;foton -c $i >> /tmp/fotonresults; done

Now /tmp/fotonresults has all the issues foton found with the files, and /ligo/home/david.barker/temp contains the "corrected" files.