Error while using clstm models that I trained and test it !

[Hadi58]

@tmbdev
Hi !
when I use default clstm models like arabic-beirut-200.clstm model, it's ok and convert successfully:
user@user ~/Desktop/mags $ kraken -i images/tt1.jpg image.txt binarize segment ocr -m arabic-beirut-
200.clstm
Loading RNN default ✓
Binarizing ✓
Segmenting ✓
Processing ✓
Writing recognition results for /tmp/tmpq1EMeq ✓
but when I use any clstm models that I trained and tested them I get:
user@user ~/Desktop/mags $ kraken -i images/tt1.jpg image.txt binarize segment ocr -m persian-keyhan-5000.clstm
Loading RNN default ✓
Binarizing ✓
Segmenting ✓
Traceback (most recent call last):
File "/usr/local/bin/kraken", line 10, in
sys.exit(cli())
File "/usr/local/lib/python2.7/dist-packages/click/core.py", line 722, in call
return self.main(*args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/click/core.py", line 697, in main
rv = self.invoke(ctx)
File "/usr/local/lib/python2.7/dist-packages/click/core.py", line 1093, in invoke
return _process_result(rv)
File "/usr/local/lib/python2.7/dist-packages/click/core.py", line 1031, in _process_result
**ctx.params)
File "/usr/local/lib/python2.7/dist-packages/click/core.py", line 535, in invoke
return callback(*args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/kraken/kraken.py", line 167, in process_pipeline
task(base_image=base_image, input=input, output=output)
File "/usr/local/lib/python2.7/dist-packages/kraken/kraken.py", line 125, in recognizer
for pred in it:
File "/usr/local/lib/python2.7/dist-packages/kraken/rpred.py", line 211, in mm_rpred
pred = nets[script].predictString(line)
File "/usr/local/lib/python2.7/dist-packages/kraken/lib/models.py", line 88, in predictString
line = line.reshape(-1, self.rnn.ninput(), 1)
ValueError: can only specify one unknown dimension

I use kraken version 0.9.6 :
user@user ~/Desktop/mags $ kraken --version
kraken, version 0.9.6.dev8
and compile separate-derivs branch to train my clstm model.