get user directory for windows

platform_Windows.py

@@ -13,4 +13,6 @@ path_end = regstring.find('\"', path_start+1)
 path = regstring[path_start+1:path_end]
 
 uninstall_path = os.path.split(path)[0]
-thunderbird_base = os.path.dirname(uninstall_path)
+thunderbird_base = os.path.dirname(uninstall_path)
+
+per_user_directory = os.path.join(os.environ['LOCALAPPDATA'], '.pEp')

unix.py

@@ -15,5 +15,7 @@ def gpg_executable(thunderbird_base):
     else:
         return gpg
 
-
-per_user_directory = environ['HOME'] + '/.pEp'
+try:
+    per_user_directory = environ['HOME'] + '/.pEp'
+except:
+    pass