Topology load errors need better error messages

[darkblueb]

When building a topology from other geometry, the process can fail for a variety of reasons. The error messages are often specific to a line of code, and lack enough context for the user to make a good decision about how to fix the problems..

Error messages can be improved to show some context, and ideally point the user in a direction to fix the problems and try again.

[strk]

what's the command you use to import these geometries ?

[darkblueb]

 SELECT TopoGeo_AddPolygon( 'census_2010_tracts_topo', h.wkb_geometry, 1.0 ) 
 FROM c2t h
 WHERE h.ogc_fid = %s

if I am reading my scribbles right..