Image rendering

[Strixx76]

I get the following error:

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Mar 4 08:51:11 server weewx[21077]: **** Traceback (most recent call last):
Mar 4 08:51:11 server weewx[21077]: **** File "/usr/share/weewx/weewx/reportengine.py", line 140, in run
Mar 4 08:51:11 server weewx[21077]: **** obj.start()
Mar 4 08:51:11 server weewx[21077]: **** File "/usr/share/weewx/weewx/reportengine.py", line 170, in start
Mar 4 08:51:11 server weewx[21077]: **** self.run()
Mar 4 08:51:11 server weewx[21077]: **** File "/usr/share/weewx/weewx/imagegenerator.py", line 31, in run
Mar 4 08:51:11 server weewx[21077]: **** self.genImages(self.gen_ts)
Mar 4 08:51:11 server weewx[21077]: **** File "/usr/share/weewx/weewx/imagegenerator.py", line 213, in genImages
Mar 4 08:51:11 server weewx[21077]: **** image = plot.render()
Mar 4 08:51:11 server weewx[21077]: **** File "/usr/share/weewx/weeplot/genplot.py", line 174, in render
Mar 4 08:51:11 server weewx[21077]: **** self._renderTopBand(draw)
Mar 4 08:51:11 server weewx[21077]: **** File "/usr/share/weewx/weeplot/genplot.py", line 380, in _renderTopBand
Mar 4 08:51:11 server weewx[21077]: **** font=unit_label_font)
Mar 4 08:51:11 server weewx[21077]: **** File "/usr/lib/python2.7/dist-packages/PIL/ImageDraw.py", line 273, in text
Mar 4 08:51:11 server weewx[21077]: **** self.draw.draw_bitmap(xy, mask, ink)
Mar 4 08:51:11 server weewx[21077]: **** TypeError: coordinate list must contain exactly 1 coordinate
Mar 4 08:51:11 server weewx[21077]: **** Generator terminated...

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After installation and correcting the .conf-file (as per ticket #27) I got som errors due to that I hade no fonts installed on system. After installing "fonts-freefont-ttf" gauges are now being rendered. But not the graphs. And the error above is showen in the log.
I have been debugging for almost 3 hours now, and can not find what is wrong.