diff --git a/OpenDirDL/opendirdl.py b/OpenDirDL/opendirdl.py
index 0a047f7..e99353f 100644
--- a/OpenDirDL/opendirdl.py
+++ b/OpenDirDL/opendirdl.py
@@ -436,6 +436,7 @@ class TreeNode:
         assert '\\' not in identifier
         self.identifier = identifier
         self.data = data
+        self.parent = None
         self.children = {}
 
     def __eq__(self, other):
@@ -551,6 +552,7 @@ def build_file_tree(databasename):
             # Create a new node for the directory, path[0]
             # path[1:] is assigned to that node to be divided next.
             child_identifier = path.pop(0)
+            child_identifier = child_identifier.replace(':', '#')
 
             child = node.children.get(child_identifier, None)
             if not child:
diff --git a/ServerReference/simpleserver.py b/ServerReference/simpleserver.py
index 5ca314b..4b0d4ab 100644
--- a/ServerReference/simpleserver.py
+++ b/ServerReference/simpleserver.py
@@ -253,6 +253,7 @@ class RequestHandler(http.server.BaseHTTPRequestHandler):
             return
 
         status_code = 200
+        self.send_response(status_code)
 
         if path.is_dir:
             mime = 'text/html'
@@ -263,7 +264,6 @@ class RequestHandler(http.server.BaseHTTPRequestHandler):
         if mime is not None:
             self.send_header('Content-type', mime)
 
-        self.send_response(status_code)
         self.end_headers()
 
     def send_path_validation_error(self, path):