[hts-users:04584] HTS-demo_CMU_ARCTIC-SLT fails when configured with USEDNN=1; tensorflow 1.4 on Ubuntu16.04 and on OS X

[Vocal Quality <vocalquality@xxxxxxxxxxxx>]

Hi,
  Thanks a lot for this amazing software.  I have been able to train
the demo with useDNN=0,
 But with USEDNN=1, it fails with the following error.

// tail of the log.

HHEd
 38765/38765 Models Loaded [7 states max, 2 mixes max]

 TR 2
  Adjusting trace level

 // load trees for mgc
 LT /Users/ram/work/vq/repos/hts_engine/demos/dnn/HTS-demo_CMU-ARCTIC-SLT/trees/ver1/cmp/mgc.inf
  Loading questions/trees from file

 // load trees for lf0
 LT /Users/ram/work/vq/repos/hts_engine/demos/dnn/HTS-demo_CMU-ARCTIC-SLT/trees/ver1/cmp/lf0.inf
  Loading questions/trees from file
  WARNING [-2661]  LoadTree: Macro lf0_s2_507-2 not recognised in
/Users/ram/pax/bin/HHEd

..  lots of lines with same warning for other macros.

 // make unseen model
 AU /Users/vocalquality/work/vq/repos/htsvoices/demos/dnn/HTS-demo_CMU-ARCTIC-SLT/data/lists/full_all.list
  Creating HMMset using trees to add unseen triphones
 Error in /Users/vocalquality/pax/bin/HHEd      -A -B -C
/Users/vocalquality/work/vq/repos/htsvoices/demos/dnn/HTS-demo_CMU-ARCTIC-SLT/configs/ver1/trn.cnf
-D -T 1 -p -i  -H
/Users/vocalquality/work/vq/repos/htsvoices/demos/dnn/HTS-demo_CMU-ARCTIC-SLT/models/ver1/cmp/stc.mmf
-w /Users/vocalquality/work/vq/repos/htsvoices/demos/dnn/HTS-demo_CMU-ARCTIC-SLT/models/ver1/cmp/stc_all.mmf
/Users/vocalquality/work/vq/repos/htsvoices/demos/dnn/HTS-demo_CMU-ARCTIC-SLT/edfiles/ver1/cmp/mku.hed
/Users/vocalquality/work/vq/repos/htsvoices/demos/dnn/HTS-demo_CMU-ARCTIC-SLT/data/lists/full.list

The above is from the log on my laptop [ OS X

The failure is at the same point on Linux too. [ Amazon deep learning AMI ]

Has any one else faced a similar issue?
Any insight into this is greatly appreciated!

Thanks a lot.
VQ