diff -r 9508e39672bb -r d5b6908e4da5 web/ldt/ldt_utils/views.py
--- a/web/ldt/ldt_utils/views.py	Thu Jun 10 19:58:55 2010 +0200
+++ b/web/ldt/ldt_utils/views.py	Thu Jun 10 20:49:13 2010 +0200
@@ -203,10 +203,11 @@
 
 def project_json(request, project):
 
-    mimetype = request.REQUEST.get("mimetype").encode("utf-8")
+    mimetype = request.REQUEST.get("mimetype")
     if mimetype is None:
         mimetype = "application/json; charset=utf-8"
-
+    else:
+        mimetype.encode("utf-8") 
     resp = HttpResponse(mimetype=mimetype)
     resp['Cache-Control']='no-cache, must-revalidate'
     resp['Pragma']='no-cache'