Check that you have all of these in ns/parameters
# Unicode by default: # see http://dqd.com/~mayoff/encoding-doc.html ns_param HackContentType 1 ns_param DefaultCharset utf-8 ns_param HttpOpenCharset utf-8 ns_param OutputCharset utf-8 ns_param URLCharset utf-8
That is from the default config file from OpenACS 5.1.1
