diff --git a/fanficfare/browsercache/__init__.py b/fanficfare/browsercache/__init__.py
index 752cb96b..43e8641b 100644
--- a/fanficfare/browsercache/__init__.py
+++ b/fanficfare/browsercache/__init__.py
@@ -40,6 +40,7 @@ class BrowserCache(object):
                                                                             getConfigList_fn)
             if self.browser_cache_impl is not None:
                 break
+            logger.debug("Not using Browser Cache Class %s"%browser_cache_class)
         if self.browser_cache_impl is None:
             raise BrowserCacheException("%s is not set, or directory does not contain a known browser cache type: '%s'"%
                                         (CACHE_DIR_CONFIG,getConfig_fn(CACHE_DIR_CONFIG)))
diff --git a/fanficfare/browsercache/browsercache_blockfile.py b/fanficfare/browsercache/browsercache_blockfile.py
index 71d519d0..a5643343 100644
--- a/fanficfare/browsercache/browsercache_blockfile.py
+++ b/fanficfare/browsercache/browsercache_blockfile.py
@@ -90,18 +90,23 @@ class BlockfileCache(BaseChromiumCache):
     def is_cache_dir(cache_dir):
         """Return True only if a directory is a valid Cache for this class"""
         if not os.path.isdir(cache_dir):
+            logger.debug("Cache dir not found")
             return False
         index_path = os.path.join(cache_dir, "index")
         if not os.path.isfile(index_path):
+            logger.debug("index file not found")
             return False
         with share_open(index_path, 'rb') as index_file:
             if struct.unpack('I', index_file.read(4))[0] != INDEX_MAGIC_NUMBER:
+                logger.debug("index file failed magic number check")
                 return False
         data0_path = os.path.join(cache_dir, "data_0")
         if not os.path.isfile(data0_path):
+            logger.debug("data_0 file not found")
             return False
         with share_open(data0_path, 'rb') as data0_file:
             if struct.unpack('I', data0_file.read(4))[0] != BLOCK_MAGIC_NUMBER:
+                logger.debug("data_0 failed magic number check")
                 return False
         return True
 
diff --git a/fanficfare/browsercache/browsercache_firefox2.py b/fanficfare/browsercache/browsercache_firefox2.py
index 20b7bd62..b19ebcd0 100644
--- a/fanficfare/browsercache/browsercache_firefox2.py
+++ b/fanficfare/browsercache/browsercache_firefox2.py
@@ -68,6 +68,7 @@ class FirefoxCache2(BaseBrowserCache):
         """Return True only if a directory is a valid Cache for this class"""
         # logger.debug("\n\n1Starting cache check\n\n")
         if not os.path.isdir(cache_dir):
+            logger.debug("Cache dir not found")
             return False
         ## check at least one entry file exists.
         for en_fl in glob.iglob(os.path.join(cache_dir, 'entries', '????????????????????????????????????????')):
@@ -75,6 +76,7 @@ class FirefoxCache2(BaseBrowserCache):
             k = _validate_entry_file(en_fl)
             if k is not None:
                 return True
+        logger.debug("No valid cache files found")
         return False
 
     def make_keys(self,url):
diff --git a/fanficfare/browsercache/browsercache_simple.py b/fanficfare/browsercache/browsercache_simple.py
index 3e4a35b8..df820e4e 100644
--- a/fanficfare/browsercache/browsercache_simple.py
+++ b/fanficfare/browsercache/browsercache_simple.py
@@ -76,15 +76,19 @@ class SimpleCache(BaseChromiumCache):
     def is_cache_dir(cache_dir):
         """Return True only if a directory is a valid Cache for this class"""
         if not os.path.isdir(cache_dir):
+            logger.debug("Cache dir not found")
             return False
         index_file = os.path.join(cache_dir, "index")
         if not (os.path.isfile(index_file) and os.path.getsize(index_file) == 24):
+            logger.debug("index file not found or wrong size(%s)"%os.path.getsize(index_file))
             return False
         real_index_file = os.path.join(cache_dir, "index-dir", "the-real-index")
         if not os.path.isfile(real_index_file):
+            logger.debug("real_index_file not found")
             return False
         with share_open(real_index_file, 'rb') as index_file:
             if struct.unpack('QQ', index_file.read(16))[1] != THE_REAL_INDEX_MAGIC_NUMBER:
+                logger.debug("real_index_file failed magic number check")
                 return False
         try:
             # logger.debug("\n\nStarting cache check\n\n")
@@ -92,9 +96,11 @@ class SimpleCache(BaseChromiumCache):
                 k = _validate_entry_file(en_fl)
                 if k is not None:
                     return True
-        except SimpleCacheException:
+        except SimpleCacheException as sce:
             # raise
+            logger.debug(sce)
             return False
+        logger.debug("No valid cache files found")
         return False
 
     def get_data_key_impl(self, url, key):