#3613 causes problems with loading .elps

[jona-sassenhagen]

After #3613, loading a normal .elp file, I get

---------------------------------------------------------------------------
AssertionError                            Traceback (most recent call last)
<ipython-input-11-eab9d558a983> in <module>()
      1 fname = fnames[2]
----> 2 mne.io.read_raw_brainvision(fname, montage=montage, preload=True, eog=[])

/home/FB/fb05/sassenha/tools/mne-python/mne/io/brainvision/brainvision.py in read_raw_brainvision(vhdr_fname, montage, eog, misc, scale, preload, response_trig_shift, event_id, verbose)
    689                           misc=misc, scale=scale, preload=preload,
    690                           response_trig_shift=response_trig_shift,
--> 691                           event_id=event_id, verbose=verbose)

/home/FB/fb05/sassenha/tools/mne-python/mne/io/brainvision/brainvision.py in __init__(self, vhdr_fname, montage, eog, misc, scale, preload, response_trig_shift, event_id, verbose)

/home/FB/fb05/sassenha/tools/mne-python/mne/utils.py in verbose(function, *args, **kwargs)
    682         with use_log_level(verbose_level):
    683             return function(*args, **kwargs)
--> 684     return function(*args, **kwargs)
    685 
    686 

/home/FB/fb05/sassenha/tools/mne-python/mne/io/brainvision/brainvision.py in __init__(self, vhdr_fname, montage, eog, misc, scale, preload, response_trig_shift, event_id, verbose)
     83             vhdr_fname, eog, misc, scale, montage)
     84         events = _read_vmrk_events(mrk_fname, event_id, response_trig_shift)
---> 85         _check_update_montage(info, montage)
     86         with open(info['filename'], 'rb') as f:
     87             f.seek(0, os.SEEK_END)

/home/FB/fb05/sassenha/tools/mne-python/mne/io/base.py in _check_update_montage(info, montage, path, update_ch_names)
   2246         if montage is not None:
   2247             if isinstance(montage, string_types):
-> 2248                 montage = read_montage(montage, path=path)
   2249             _set_montage(info, montage, update_ch_names=update_ch_names)
   2250 

/home/FB/fb05/sassenha/tools/mne-python/mne/channels/montage.py in read_montage(kind, ch_names, path, unit, transform)
    267                                   for h, a in zip(horiz, az)]))
    268         pol = radius * np.pi
--> 269         pos = _sph_to_cart(np.array([np.ones(len(az)) * 85., az, pol])).T
    270     elif ext == '.hpts':
    271         # MNE-C specified format for generic digitizer data

/home/FB/fb05/sassenha/tools/mne-python/mne/transforms.py in _sph_to_cart(sph)
    583 def _sph_to_cart(sph):
    584     """Convert spherical coordinates to Cartesion coordinates."""
--> 585     assert sph.ndim == 2 and sph.shape[1] == 3
    586     sph = np.atleast_2d(sph)
    587     out = np.empty((len(sph), 3))

AssertionError: 

The problem is that the input to _sph_to_cart has shape (3, 368), but the second dimension should be 3, not the first. There should have been a test for this ...

@Eric89GXL