QGIS » QGIS Application

Running the "Hex grid from layer" script gives this error:
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Oooops! The following output layers could not be open
grid: /tmp/processing/1429ad65364842438cdb2532e93107f5/grid.shp
The above files could not be opened, which probably indicates that
they were not correctly produced by the executed algorithm
Checking the log information might help you see why those layers were
not created as expected
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The log helpfully suggests:
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Horizontal spacing is too small for the covered area
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Running the "Create Grid" gui with the same values gives this in the log:
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#ALGORITHM|Sat Dec 06 2014 18:31:27|processing.runalg("qgis:creategrid",3,7829,10226,200,200,353075,6595874,"EPSG:28351","/home/user/temp.shp")
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which is to say
processing.runalg("qgis:creategrid", gridtype, width, height, hspacing, vspacing, centerx, centery, CRStype, savename)

This is different to the documentation
processing.runalg('qgis:creategrid', hspacing, vspacing, width, height, centerx, centery, gridtype, savename)

which the "Hex grid from layer" script follows
processing.runalg('qgis:creategrid', cellsize, cellsize, width, height, centerx, centery, 3, input.crs().authid(), grid)

I'll assume qgis:creategrid alg is correct and the documentation needs an update (if you can point me in the right direction I can do that), and am providing a patch for the "Hex grid from layers" script