fix [#26895] STL import in Win 7 64bit

io_mesh_stl/__init__.py

@@ -77,7 +77,7 @@ class ImportSTL(bpy.types.Operator, ImportHelper):
                                       "the STL file",
                           type=bpy.types.OperatorFileListElement)
 
-    directory = StringProperty()
+    directory = StringProperty(subtype='DIR_PATH')
 
     def execute(self, context):
         from . import stl_utils
@@ -88,8 +88,14 @@ class ImportSTL(bpy.types.Operator, ImportHelper):
         if not paths:
             paths.append(self.filepath)
 
+        if bpy.ops.object.mode_set.poll():
+            bpy.ops.object.mode_set(mode='OBJECT')
+
+        if bpy.ops.object.select_all.poll():
+            bpy.ops.object.select_all(action='DESELECT')
+
         for path in paths:
-            objName = bpy.path.display_name(path.split("\\")[-1].split("/")[-1])
+            objName = bpy.path.display_name(os.path.basename(path))
             tris, pts = stl_utils.read_stl(path)
 
             blender_utils.create_and_link_mesh(objName, tris, pts)

io_mesh_stl/blender_utils.py

@@ -30,13 +30,16 @@ def create_and_link_mesh(name, faces, points):
     mesh = bpy.data.meshes.new(name)
     mesh.from_pydata(points, [], faces)
 
-    ob = bpy.data.objects.new(name, mesh)
-    bpy.context.scene.objects.link(ob)
-
     # update mesh to allow proper display
     mesh.validate()
     mesh.update()
 
+    scene = bpy.context.scene
+
+    obj = bpy.data.objects.new(name, mesh)
+    scene.objects.link(obj)
+    obj.select = True
+
 
 def faces_from_mesh(ob, apply_modifier=False, triangulate=True):
     '''