diff --git a/volatility3/framework/symbols/windows/extensions/__init__.py b/volatility3/framework/symbols/windows/extensions/__init__.py
index 616744093..dc0de1dda 100755
--- a/volatility3/framework/symbols/windows/extensions/__init__.py
+++ b/volatility3/framework/symbols/windows/extensions/__init__.py
@@ -307,12 +307,15 @@ class MMVAD(MMVAD_SHORT):
         try:
             # this is for xp and 2003
             if self.has_member("ControlArea"):
-                file_name = self.ControlArea.FilePointer.FileName.get_string()
+                filename_obj = self.ControlArea.FilePointer.FileName
 
             # this is for vista through windows 7
             else:
-                file_name = self.Subsection.ControlArea.FilePointer.dereference().cast(
-                    "_FILE_OBJECT").FileName.get_string()
+                filename_obj = self.Subsection.ControlArea.FilePointer.dereference().cast(
+                    "_FILE_OBJECT").FileName
+
+            if filename_obj.Length > 0:
+                file_name = filename_obj.get_string()
 
         except exceptions.InvalidAddressException:
             pass
@@ -902,8 +905,8 @@ class CONTROL_AREA(objects.StructType):
                 return False
 
             # The first SubsectionBase should not be page aligned
-            #subsection = self.get_subsection()
-            #if subsection.SubsectionBase & self.PAGE_MASK == 0:
+            # subsection = self.get_subsection()
+            # if subsection.SubsectionBase & self.PAGE_MASK == 0:
             #    return False
         except exceptions.InvalidAddressException:
             return False
@@ -952,7 +955,7 @@ class CONTROL_AREA(objects.StructType):
             subsection_offset = starting_sector * 0x200
 
             # Similar to the check in is_valid(), make sure the SubsectionBase is not page aligned.
-            #if subsection.SubsectionBase & self.PAGE_MASK == 0:
+            # if subsection.SubsectionBase & self.PAGE_MASK == 0:
             #    break
 
             ptecount = 0
@@ -983,8 +986,8 @@ class CONTROL_AREA(objects.StructType):
                     # Currently just a temporary workaround to deal with custom bit flag
                     # in the PFN field for pages in transition state.
                     # See https://github.com/volatilityfoundation/volatility3/pull/475
-                    physoffset = (mmpte.u.Trans.PageFrameNumber & (( 1 << 33 ) - 1 ) ) << 12
-                    
+                    physoffset = (mmpte.u.Trans.PageFrameNumber & ((1 << 33) - 1)) << 12
+
                     yield physoffset, file_offset, self.PAGE_SIZE
 
                 # Go to the next PTE entry
diff --git a/volatility3/framework/symbols/windows/extensions/registry.py b/volatility3/framework/symbols/windows/extensions/registry.py
index f30bb5eb0..47ff24506 100644
--- a/volatility3/framework/symbols/windows/extensions/registry.py
+++ b/volatility3/framework/symbols/windows/extensions/registry.py
@@ -5,10 +5,10 @@
 import enum
 import logging
 import struct
-from typing import Optional, Iterable, Union
+from typing import Iterable, Optional, Union
 
-from volatility3.framework import constants, exceptions, objects, interfaces
-from volatility3.framework.layers.registry import RegistryHive, RegistryInvalidIndex, RegistryFormatException
+from volatility3.framework import constants, exceptions, interfaces, objects
+from volatility3.framework.layers.registry import RegistryFormatException, RegistryHive, RegistryInvalidIndex
 
 vollog = logging.getLogger(__name__)
 
@@ -76,7 +76,9 @@ class CMHIVE(objects.StructType):
 
         for attr in ["FileFullPath", "FileUserName", "HiveRootPath"]:
             try:
-                return getattr(self, attr).get_string()
+                name = getattr(self, attr)
+                if name.Length > 0:
+                    return name.get_string()
             except (AttributeError, exceptions.InvalidAddressException):
                 pass
 
@@ -269,7 +271,7 @@ class CM_KEY_VALUE(objects.StructType):
         if self_type == RegValueTypes.REG_DWORD_BIG_ENDIAN:
             if len(data) != struct.calcsize(">L"):
                 raise ValueError(f"Size of data does not match the type of registry value {self.get_name()}")
-            res, =  struct.unpack(">L", data)
+            res, = struct.unpack(">L", data)
             return res
         if self_type == RegValueTypes.REG_QWORD:
             if len(data) != struct.calcsize("<Q"):
@@ -277,9 +279,9 @@ class CM_KEY_VALUE(objects.StructType):
             res, = struct.unpack("<Q", data)
             return res
         if self_type in [
-                RegValueTypes.REG_SZ, RegValueTypes.REG_EXPAND_SZ, RegValueTypes.REG_LINK, RegValueTypes.REG_MULTI_SZ,
-                RegValueTypes.REG_BINARY, RegValueTypes.REG_FULL_RESOURCE_DESCRIPTOR, RegValueTypes.REG_RESOURCE_LIST,
-                RegValueTypes.REG_RESOURCE_REQUIREMENTS_LIST
+            RegValueTypes.REG_SZ, RegValueTypes.REG_EXPAND_SZ, RegValueTypes.REG_LINK, RegValueTypes.REG_MULTI_SZ,
+            RegValueTypes.REG_BINARY, RegValueTypes.REG_FULL_RESOURCE_DESCRIPTOR, RegValueTypes.REG_RESOURCE_LIST,
+            RegValueTypes.REG_RESOURCE_REQUIREMENTS_LIST
         ]:
             return data
         if self_type == RegValueTypes.REG_NONE: