Conifer:error of ploting

[cjo4m4fm]

Hello everyone:

I perfomred the quick start on dos
(http://conifer.sourceforge.net/quickstart.html)

I tried:
C:\Python27\python conifer.py plotcalls --input analysis.hdf5 --calls calls.txt --outputdir ./call_images/

bur I got error messages:

Traceback (most recent call last):
File "conifer.py", line 682, in <module>
args.func(args)
File "conifer.py", line 534, in CF_plotcalls
plt.savefig(args.outputdir + "/" + outfile)
File "C:\Python27\lib\site-packages\matplotlib\pyplot.py", line 472, in savefi
g
return fig.savefig(*args, **kwargs)
File "C:\Python27\lib\site-packages\matplotlib\figure.py", line 1370, in savef
ig
self.canvas.print_figure(*args, **kwargs)
File "C:\Python27\lib\site-packages\matplotlib\backend_bases.py", line 2096, i
n print_figure
**kwargs)
File "C:\Python27\lib\site-packages\matplotlib\backends\backend_agg.py", line
497, in print_png
filename_or_obj = open(filename_or_obj, 'wb')
IOError: [Errno 2] No such file or directory: './call_images//chr1_155178595_155
217746_RPKM_data\\NA19129.png'
Closing remaining open files: analysis.hdf5... done

The error occured might because of the term"./call_images/".
It that for the difference b/w dos and linux?
How can I do for it?

Any help will be very appreciated,thank you!!