I identified the issue causing my ARS4305E error:
My Generic indexer files were not following the proper naming convention. Once I created a set of 3 files with the general naming convention of
IGN.IGN.APPGROUPNAME.APPNAME.0.0.ard.ind
IGN.IGN.APPGROUPNAME.APPNAME.0.0.ard.out
IGN.IGN.APPGROUPNAME.APPNAME.0.0.ard
where I replace the IGN with values to make each set of filenames unique.
It seems that I was not including .ard as part of all three file names. Anyway, it seems to be loading now...
Thanks,
Joe