diff --git a/CHANGELOG.md b/CHANGELOG.md
index c237b937..1fdc2b0a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,10 +1,13 @@
 # Changelog
 
+## Unreleased
+- Fixed extraction of `smugmug` albums with no explicit owner ([#100](https://github.com/mikf/gallery-dl/issues/100))
+
 ## 1.5.2 - 2018-08-31
-- Added support for `twitter` timelines
+- Added support for `twitter` timelines ([#96](https://github.com/mikf/gallery-dl/issues/96))
 - Added option to suppress FFmpeg output during ugoira conversions
 - Improved filename formatter performance
-- Improved inline image quality on `tumblr`
+- Improved inline image quality on `tumblr` ([#98](https://github.com/mikf/gallery-dl/issues/98))
 - Fixed image URLs for newly released `mangadex` chapters
 - Fixed a smaller issue with `deviantart` journals
 - Replaced `subapics` with `ngomik`
diff --git a/gallery_dl/extractor/smugmug.py b/gallery_dl/extractor/smugmug.py
index 742f7d95..0973f350 100644
--- a/gallery_dl/extractor/smugmug.py
+++ b/gallery_dl/extractor/smugmug.py
@@ -19,8 +19,19 @@ BASE_PATTERN = (
 class SmugmugExtractor(Extractor):
     """Base class for smugmug extractors"""
     category = "smugmug"
-    filename_fmt = ("{category}_{User[NickName]}_"
+    filename_fmt = ("{category}_{User[NickName]:?/_/}"
                     "{Image[UploadKey]}_{Image[ImageKey]}.{extension}")
+    empty_user = {
+        "Uri": "",
+        "ResponseLevel": "Public",
+        "Name": "",
+        "NickName": "",
+        "QuickShare": False,
+        "RefTag": "",
+        "ViewPassHint": "",
+        "WebUri": "",
+        "Uris": None,
+    }
 
     def __init__(self):
         Extractor.__init__(self)
@@ -44,11 +55,16 @@ class SmugmugAlbumExtractor(SmugmugExtractor):
     archive_fmt = "a_{Album[AlbumKey]}_{Image[ImageKey]}"
     pattern = [r"smugmug:album:([^:]+)$"]
     test = [
+        ("smugmug:album:ddvxpg", {
+            "url": "8775c2cf05f001e895435faa89f22a03214568bf",
+        }),
+        # empty
         ("smugmug:album:SXvjbW", {
             "count": 0,
         }),
-        ("smugmug:album:ddvxpg", {
-            "url": "8775c2cf05f001e895435faa89f22a03214568bf",
+        # no "User"
+        ("smugmug:album:6VRT8G", {
+            "url": "3d3f161a77e2e11a04b6778cc62238128c1f1113",
         }),
     ]
 
@@ -58,7 +74,7 @@ class SmugmugAlbumExtractor(SmugmugExtractor):
 
     def items(self):
         album = self.api.album(self.album_id, "User")
-        user = album["Uris"]["User"]
+        user = album["Uris"].get("User") or self.empty_user.copy()
 
         del user["Uris"]
         del album["Uris"]
@@ -79,11 +95,18 @@ class SmugmugImageExtractor(SmugmugExtractor):
     directory_fmt = ["{category}", "{User[NickName]}"]
     archive_fmt = "{Image[ImageKey]}"
     pattern = [BASE_PATTERN + r"(?:/[^/?&#]+)+/i-([^/?&#]+)"]
-    test = [("https://acapella.smugmug.com/Micro-Macro/Drops/i-g2Dmf9z", {
-        "url": "ab0d7aa001a53ff3fd228622070b39005b6fc179",
-        "keyword": "a116167929c22338e6067b81c5d3bee641df3af3",
-        "content": "64a8f69a1d824921eebbdf2420087937adfa45cd",
-    })]
+    test = [
+        ("https://acapella.smugmug.com/Micro-Macro/Drops/i-g2Dmf9z", {
+            "url": "ab0d7aa001a53ff3fd228622070b39005b6fc179",
+            "keyword": "a116167929c22338e6067b81c5d3bee641df3af3",
+            "content": "64a8f69a1d824921eebbdf2420087937adfa45cd",
+        }),
+        # no "ImageOwner"
+        ("https://www.smugmug.com/gallery/n-GLCjnD/i-JD62fQk", {
+            "url": "721023fd2cba1a88404b54039d9eebb5756d1e68",
+            "keyword": "1189f48e6b2592f6b90f8bd875238e93aba780e7",
+        }),
+    ]
 
     def __init__(self, match):
         SmugmugExtractor.__init__(self)
@@ -91,7 +114,7 @@ class SmugmugImageExtractor(SmugmugExtractor):
 
     def items(self):
         image = self.api.image(self.image_id, "LargestImage,ImageOwner")
-        user = image["Uris"]["ImageOwner"]
+        user = image["Uris"].get("ImageOwner") or self.empty_user.copy()
         url = self._apply_largest(image)
 
         del user["Uris"]
@@ -106,7 +129,7 @@ class SmugmugImageExtractor(SmugmugExtractor):
 class SmugmugPathExtractor(SmugmugExtractor):
     """Extractor for smugmug albums from URL paths and users"""
     subcategory = "path"
-    pattern = [BASE_PATTERN + r"((?:/[^/?&#a-mo-z][^/?&#]*)*)/?$"]
+    pattern = [BASE_PATTERN + r"((?:/[^/?&#a-fh-mo-z][^/?&#]*)*)/?$"]
     test = [
         ("https://acapella.smugmug.com/Micro-Macro/Drops/", {
             "pattern": "smugmug:album:ddvxpg$",
@@ -115,6 +138,11 @@ class SmugmugPathExtractor(SmugmugExtractor):
             "pattern": r"smugmug:album:\w+$",
             "url": "8bd8b3f4f8bdd584bf5ddfd509ff3c98f8bc323b",
         }),
+        # gallery node without owner
+        ("https://www.smugmug.com/gallery/n-GLCjnD/", {
+            "pattern": "smugmug:album:6VRT8G$",
+        }),
+        # custom domain
         ("smugmug:www.creativedogportraits.com/PortfolioGallery/", {
             "pattern": "smugmug:album:txWXzs$",
         }),
@@ -135,8 +163,11 @@ class SmugmugPathExtractor(SmugmugExtractor):
             self.user = self.api.site_user(self.domain)["NickName"]
 
         if self.path:
-            data = self.api.user_urlpathlookup(self.user, self.path)
-            node = data["Uris"]["Node"]
+            if self.path.startswith("/gallery/n-"):
+                node = self.api.node(self.path[11:])
+            else:
+                data = self.api.user_urlpathlookup(self.user, self.path)
+                node = data["Uris"]["Node"]
 
             if node["Type"] == "Album":
                 nodes = (node,)
@@ -265,7 +296,8 @@ class SmugmugAPI(oauth.OAuth1API):
                 uris = obj["Uris"]
 
                 for name in expands:
-                    uri = uris[name]
-                    uris[name] = unwrap(expansions[uri])
+                    if name in uris:
+                        uri = uris[name]
+                        uris[name] = unwrap(expansions[uri])
 
         return objs
diff --git a/gallery_dl/version.py b/gallery_dl/version.py
index 867395f4..a279e91e 100644
--- a/gallery_dl/version.py
+++ b/gallery_dl/version.py
@@ -6,4 +6,4 @@
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
 
-__version__ = "1.5.2"
+__version__ = "1.5.3-dev"
diff --git a/test/test_results.py b/test/test_results.py
index 0248f0e5..6cb7941c 100644
--- a/test/test_results.py
+++ b/test/test_results.py
@@ -23,6 +23,7 @@ TRAVIS_SKIP = {
 
 # temporary issues, etc.
 BROKEN = {
+    "simplyhentai",
 }