Algorithm 'Service area (from layer)' starting... Input parameters: { 'INPUT' : 'J:/GeoWorkspaces/Infrastructure Strategy/Infrastructure Planning and Policy/Principal Pedestrian Network/Testing shp/RD_CL_Roads_Register.shp', 'START_POINTS' : 'J:/GeoWorkspaces/Infrastructure Strategy/Infrastructure Planning and Policy/Principal Pedestrian Network/Testing shp/Sorrento/Sorrento Primary_Destinations.shp', 'STRATEGY' : 1, 'TRAVEL_COST' : 0, 'DIRECTION_FIELD' : '', 'VALUE_FORWARD' : '', 'VALUE_BACKWARD' : '', 'VALUE_BOTH' : '', 'DEFAULT_DIRECTION' : 2, 'SPEED_FIELD' : '', 'DEFAULT_SPEED' : 5, 'TOLERANCE' : 0, 'OUTPUT' : 'memory:' } Loading start points... Building graph... Traceback (most recent call last): File "C:/PROGRA~1/QGIS2~1.99/apps/qgis-dev/./python/plugins\processing\algs\qgis\ServiceAreaFromLayer.py", line 226, in processAlgorithm snappedPoints = director.makeGraph(builder, points, feedback) Exception: unknown Execution failed after 0.66 seconds Loading resulting layers Algorithm 'Service area (from layer)' finished