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[thredds] ConstantOffsets 404 error

Hello,
I have a collection of ROMS model forecast runs set up in an FMRC. My "TwoD" and "Runs" datasets work fine. However, the "ConstantOffsets" dataset gives a 404 not found when you try to access it. No errors appear in any THREDDS or tomcat logs. Interestingly it's only when you try to access: 

http://tds.marine.rutgers.edu:8080/thredds/dodsC/roms/espresso/2013_da/avg_roc/offset/ESPRESSO_Real-Time_v2_Averages_Runs_and_Offset_Collections_Offset_12.0hr.html
meaning you get the meta data page with the OPeNDAP access link but get a 404 when you click that link.
I have a very similar dataset (a few less variables and slightly different run-time) that works fine. The biggest difference is that the dataset that doesn't work was created in NetCDF-4 format. However, I have tried converting the files (with NCO) to NetCDF-3 and still get the same 404 error. I have even converted the working dataset to NetCDF-4 and that dataset continues to work.
I have turned "Files" on for the "ROMS ESPRESSO Real-Time Operational IS4DVAR Forecast System Version 2 2013-present" datasets at: 

http://tds.marine.rutgers.edu:8080/thredds/roms/espresso/catalog.html
if anyone would like to reproduce this. Perhaps with a debugging build of the TDS. I am using Java 1.7.0_21, Tomcat 7.0.40 and THREDDS 4.3.16 - 20130319.1353. 

A subset of the working, older dataset is the last link on that page.

Thanks,
David Robertson



catalog.xml excerpt:
<featureCollection name="ESPRESSO_Real-Time_v2_History_Runs_and_Offset_Collections" 
                         featureType="FMRC"
                         harvest="true"
                         path="roms/espresso/2013_da/his_roc">
         <metadata inherited="true">
            <documentation type="summary">
               Runs and offset collections for history
            </documentation>
         </metadata>
<collection spec="/home/om/dods-data/thredds/roms/espresso/2013_da/his/.*\.nc$" 
                     name="espresso_2013_da_his_roc"
                     dateFormatMark="#espresso_his_#yyyyMMdd_HHmm" />
         <update startup="nocheck" trigger="allow" />
         <protoDataset choice="Penultimate">
<netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2"; location="nc/cldc.mean.nc"> 
               <remove name="ocean_time" type="variable" />
            </netcdf>
         </protoDataset>
<fmrcConfig regularize="false" datasetTypes="TwoD Runs ConstantOffsets Files" /> 
      </featureCollection>
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