write_hdf5 presents a problem with 'maxshape'

[mrosanes]

I am facing a problem when trying to store a stack of images into an hdf5 using write_hdf5 function:

Traceback (most recent call last):
File "test.py", line 56, in
dxchange.write_hdf5(rec1)
File "/homelocal/sicilia/anaconda2/lib/python2.7/site-packages/dxchange/writer.py", line 254, in write_hdf5
appendaxis, maxshape)
UnboundLocalError: local variable 'maxshape' referenced before assignment