I had a few problems making this application work so i tried reinstalling it. when i run it from x-term i get this output and it does not load:

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external python-simplejson
confpath = /root/.mypaint/
Created /root/.mypaint/
Created /root/.mypaint/backgrounds
Created /root/.mypaint/brushes
Merging upstream brush changes into your collection.
Traceback (most recent call last):
File "/opt/mypaint/bin/mypaint", line 172, in <module>
main.main(datapath, confpath)
File "/opt/mypaint/share/mypaint/gui/main.py", line 75, in main
run()
File "/opt/mypaint/share/mypaint/gui/main.py", line 42, in run
app = application.Application(datapath, options.config, args)
File "/opt/mypaint/share/mypaint/gui/application.py", line 60, in __init__
self.doc = document.Document(self)
File "/opt/mypaint/share/mypaint/gui/document.py", line 40, in __init__
self.tdw.neutral_background_pixbuf = backgroundsurface.Background(pixbuf)
File "/opt/mypaint/share/mypaint/lib/backgroundsurface.py", line 22, in __init__
obj = helpers.gdkpixbuf2numpy(obj)
File "/opt/mypaint/share/mypaint/lib/helpers.py", line 113, in gdkpixbuf2numpy
arr = pixbuf.get_pixels_array()
ImportError: No module named _numpy
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anyone knows what this is about?

[EDIT] solved - was my mistake.