diff --git a/py/ztools/lib/Keys.py b/py/ztools/lib/Keys.py
index 5f871400..70fb7527 100644
--- a/py/ztools/lib/Keys.py
+++ b/py/ztools/lib/Keys.py
@@ -59,8 +59,13 @@ def generateKek(src, masterKey, kek_seed, key_seed):
 def unwrapAesWrappedTitlekey(wrappedKey, keyGeneration):
 	aes_kek_generation_source = uhx(keys['aes_kek_generation_source'])
 	aes_key_generation_source = uhx(keys['aes_key_generation_source'])
+	
+	if keyGeneration<10:
+		mk = 'master_key_0'
+	else:
+		mk = 'master_key_'	
 
-	kek = generateKek(uhx(keys['key_area_key_application_source']), uhx(keys['master_key_0' + str(keyGeneration)]), aes_kek_generation_source, aes_key_generation_source)
+	kek = generateKek(uhx(keys['key_area_key_application_source']), uhx(keys[mk + str(keyGeneration)]), aes_kek_generation_source, aes_key_generation_source)
 
 	crypto = aes128.AESECB(kek)
 	return crypto.decrypt(wrappedKey)		
diff --git a/py/ztools/lib/listmanager.py b/py/ztools/lib/listmanager.py
index 5d2d8586..f217e9ff 100644
--- a/py/ztools/lib/listmanager.py
+++ b/py/ztools/lib/listmanager.py
@@ -327,6 +327,21 @@ def folder_to_list(ifolder,extlist=['nsp'],filter=False):
 			if os.path.isdir(ruta):
 				for dirpath, dirnames, filenames in os.walk(ruta):
 					for filename in [f for f in filenames if f.endswith(ext.lower()) or f.endswith(ext.upper()) or f[:-1].endswith(ext.lower()) or f[:-1].endswith(ext.lower())]:
+						try:
+							fname=""
+							if filter != False:
+								if filter.lower() in filename.lower():
+									fname=filename
+							else:
+								fname=filename
+							if fname != "":
+								if binbin.lower() not in filename.lower():
+									filelist.append(os.path.join(dirpath, filename))
+						except:pass			
+			else:
+				try:
+					if ruta.endswith(ext.lower()) or ruta.endswith(ext.upper()) or ruta[:-1].endswith(ext.lower()) or ruta[:-1].endswith(ext.upper()):
+						filename = ruta
 						fname=""
 						if filter != False:
 							if filter.lower() in filename.lower():
@@ -335,19 +350,8 @@ def folder_to_list(ifolder,extlist=['nsp'],filter=False):
 							fname=filename
 						if fname != "":
 							if binbin.lower() not in filename.lower():
-								filelist.append(os.path.join(dirpath, filename))
-			else:
-				if ruta.endswith(ext.lower()) or ruta.endswith(ext.upper()) or ruta[:-1].endswith(ext.lower()) or ruta[:-1].endswith(ext.upper()):
-					filename = ruta
-					fname=""
-					if filter != False:
-						if filter.lower() in filename.lower():
-							fname=filename
-					else:
-						fname=filename
-					if fname != "":
-						if binbin.lower() not in filename.lower():
-							filelist.append(filename)
+								filelist.append(filename)
+				except:pass			
 	except BaseException as e:
 		nutPrint.error('Exception: ' + str(e))													
 	return filelist
diff --git a/py/ztools/lib/nutdb.py b/py/ztools/lib/nutdb.py
index a45476d8..e4e45328 100644
--- a/py/ztools/lib/nutdb.py
+++ b/py/ztools/lib/nutdb.py
@@ -1408,7 +1408,8 @@ def checkfolder(ofolder,roman=True,printinfo=True):
 	feed=''
 	rglist=['America','Europe','Japan','Asia']
 	
-	filelist=listmanager.folder_to_list(ofolder,extlist=['nsp,nsz,xci,xcz'])
+	filelist=listmanager.folder_to_list(ofolder,extlist=['nsp','nsz','xci','xcz'])
+  
 	# for f in filelist:
 		# print(f)
 	test2="";test=""
@@ -1521,7 +1522,9 @@ def checkfolder_updates(ofolder,roman=True,printinfo=True):
 	feed=''
 	rglist=['America','Europe','Japan','Asia']
 	
-	filelist=listmanager.create_list_from_folder(ofolder)
+
+	filelist=listmanager.folder_to_list(ofolder,extlist=['nsp','nsz','xci','xcz'])
+
 	# for f in filelist:
 		# print(f)
 	test2="";test=""
@@ -1557,6 +1560,8 @@ def checkfolder_updates(ofolder,roman=True,printinfo=True):
 		except:pass			
 	del filelist	
 
+	# print(Datashelve.keys())
+
 	f='nutdb_'+'versions'+'.txt'
 	_dbfile_=os.path.join(DATABASE_folder,f)	
 	check_other_file(urlconfig,'versions_txt')
@@ -1590,7 +1595,9 @@ def checkfolder_updates(ofolder,roman=True,printinfo=True):
 						# print(data[2])
 						# print('..')
 						if int(v_)>int(data[2]):		
-							missID.append(tid,v_)				
+
+							missID.append([tid,v_])				
+
 				except:pass
 	# print(missID)
 	for t,v in missID: