Properties Editor / UI:

* Fix a py error in the "Image Sampling" panel, tex.image can be NULL.

release/scripts/startup/bl_ui/properties_texture.py

@@ -476,7 +476,8 @@ class TEXTURE_PT_image_sampling(TextureTypePanel, Panel):
         col = split.column()
         col.label(text="Alpha:")
         row = col.row()
-        row.active = tex.image and tex.image.use_alpha
+        if not (tex.image and tex.image.use_alpha):
+            row.active = False
         row.prop(tex, "use_alpha", text="Use")
         col.prop(tex, "use_calculate_alpha", text="Calculate")
         col.prop(tex, "invert_alpha", text="Invert")