I had the same issue with some polygon datasets today. Used a fixed distance buffer with distance 0 to "fix" the datasets.
Best wishes, Anita
_______________________________________________ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: http://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user