diff --git a/fanficfare/adapters/adapter_fanfictionnet.py b/fanficfare/adapters/adapter_fanfictionnet.py
index f2c45504..3a9f949b 100644
--- a/fanficfare/adapters/adapter_fanfictionnet.py
+++ b/fanficfare/adapters/adapter_fanfictionnet.py
@@ -116,8 +116,13 @@ class FanFictionNetSiteAdapter(BaseSiteAdapter):
                 if not self.getConfig("chrome_cache_path"):
                     raise exceptions.FailedToDownload("FFnet Workaround: chrome_cache_path setting must be set.")
                 self.browser_cache = BrowserCache(self.getConfig("chrome_cache_path"))
-            except PermissionError:
-                raise exceptions.FailedToDownload("Permission to Chrome Cache (%s) denied--Did you quit Chrome?" % self.getConfig("chrome_cache_path"))
+            except (IOError, OSError) as e:
+                # Workaround for PermissionError being py3 only.
+                from errno import EACCES, EPERM, ENOENT
+                if e.errno==EPERM or e.errno==EACCES:
+                    raise exceptions.FailedToDownload("Permission to Chrome Cache (%s) denied--Did you quit Chrome?" % self.getConfig("chrome_cache_path"))
+                else:
+                    raise
             logger.debug("Done making self.browser_cache")
         data = self.browser_cache.get_data(url)
         if data is None:
diff --git a/fanficfare/browsercache/__init__.py b/fanficfare/browsercache/__init__.py
index e874b726..758ba6d8 100644
--- a/fanficfare/browsercache/__init__.py
+++ b/fanficfare/browsercache/__init__.py
@@ -9,7 +9,6 @@ class BrowserCache:
     def __init__(self, cache_dir=None):
         """Constructor for BrowserCache"""
         # import of child classes have to be inside the def to avoid circular import error
-        browser_cache_class: BaseBrowserCache
         for browser_cache_class in [SimpleCache, ChromeDiskCache]:
             self.browser_cache = browser_cache_class.new_browser_cache(cache_dir)
             if self.browser_cache is not None:
diff --git a/fanficfare/browsercache/chromediskcache.py b/fanficfare/browsercache/chromediskcache.py
index 4b1946b8..71145e22 100644
--- a/fanficfare/browsercache/chromediskcache.py
+++ b/fanficfare/browsercache/chromediskcache.py
@@ -18,7 +18,7 @@ class ChromeDiskCache(BaseBrowserCache):
 
     def __init__(self, cache_dir=None):
         """Constructor for ChromeDiskCache"""
-        super().__init__(cache_dir)
+        BaseBrowserCache.__init__(self,cache_dir)
         if not self.is_cache_dir(cache_dir):
             raise ChromeDiskCacheException("Directory does not contain a Chrome Disk Cache: '%s'" % cache_dir)
         self.chromagnon_cache = ChromeCache(cache_dir)
diff --git a/fanficfare/browsercache/simplecache.py b/fanficfare/browsercache/simplecache.py
index 198ea5c7..ff33cd41 100644
--- a/fanficfare/browsercache/simplecache.py
+++ b/fanficfare/browsercache/simplecache.py
@@ -4,7 +4,6 @@ import hashlib
 import gzip
 import zlib
 import glob
-from typing import cast, Tuple
 from . import BaseBrowserCache, BrowserCacheException
 
 import logging
@@ -39,7 +38,7 @@ class SimpleCache(BaseBrowserCache):
 
     def __init__(self, cache_dir=None):
         """Constructor for SimpleCache"""
-        super().__init__(cache_dir)
+        BaseBrowserCache.__init__(self,cache_dir)
         ## already called from parent.new_browser_cache()
         # if not self.is_cache_dir(cache_dir):
         #     raise SimpleCacheException("Directory does not contain a Chrome Simple Cache: '%s'" % cache_dir)
@@ -157,8 +156,8 @@ def _get_headers(path):
         # parse the raw bytes into a HttpHeader structure:
         # It is a series of null terminated strings, first is status code,e.g., "HTTP/1.1 200"
         # the rest are name:value pairs used to populate the headers dict.
-        strings: list[str] = entry_file.read(header_size).decode('utf-8').split('\0')
-        headers = dict(cast(Tuple[str, str], s.split(':', 1)) for s in strings[1:] if ':' in s)
+        strings = entry_file.read(header_size).decode('utf-8').split('\0')
+        headers = dict(s.split(':', 1) for s in strings[1:] if ':' in s)
     return headers
 
 
diff --git a/fanficfare/chromagnon/cacheParse.py b/fanficfare/chromagnon/cacheParse.py
index 0d35b495..867b9409 100644
--- a/fanficfare/chromagnon/cacheParse.py
+++ b/fanficfare/chromagnon/cacheParse.py
@@ -73,7 +73,8 @@ from .cacheAddress import CacheAddress
 from .cacheBlock import CacheBlock
 from .cacheData import CacheData
 from .cacheEntry import CacheEntry
-from six.moves import range
+from ..six.moves import range
+from ..six import ensure_binary, ensure_text
 
 class ChromeCache(object):
     def __init__(self,path):
@@ -85,7 +86,7 @@ class ChromeCache(object):
             raise Exception("Invalid Index File")
 
     def get_cache_entry(self,url):
-        url = bytes(url,'utf8')
+        url = ensure_binary(url,'utf8')
         # Compute the key and seeking to it
         # print("url:%s"%url)
         hash = SuperFastHash.superFastHash(url)