New encoding errors doc to ref #532. Also moved server error 500 into own doc.
Documents work-around for missing charsets in the encodings list from pydicom 0.9.9.
@tcdewit - this will close your issue ref #532 - I would appreciate it if you could take a look. I don't know if you can test it as you found the error when using query-retrieve I think?
I'll also ask Rossana who has this issue with some of her kit (Google group message)
If I don't have any feedback in a day or so I'll merge it in.