Pyshp - problem creating POLYLINE shapefiles

[Gordon Paterson]

Hi everyone,

I have an issue when I create a POLYLINE shapefile.

Whenever I open a line shapefile that I have created with pyshp in arcGIS it displays the geometry correctly but it's not selectable and when I come to try and load the data into a geoDB it's as if the data does not exist.

In arcGIS I can marque select some lines but the info tool reports that they have no location.

I've tried using QGIS but, although the attribute table exists, nothing is displayed for the geometries.

I am using - windows 7 pro, python 2.7.3, pyshp 1.1.7 and arcGIS 10.1.

I have tried creating shapefiles using my own script and using the examples on the pyshp wiki with the same results.

It works correctly when I create a points shapefile.

Can someone please point out where I'm going wrong or point me in the right direction.

Thanks

-Gordon