Text Search Configuration Problem

I'm using Postgresql version 8.3.1 on CentOS 5 and am following the steps in section 12.7 of the documentation for creating a custom text search configuration.

When I get to the step that says:

CREATE TEXT SEARCH DICTIONARY english_ispell (
TEMPLATE = ispell,
DictFile = english,
AffFile = english,
StopWords = english
);

I get the following error:

ERROR: invalid byte sequence for encoding "UTF8": 0xe0c020
HINT: This error can also happen if the byte sequence does not match the encoding expected by the server, which is controlled by "client_encoding".

I'm using the english ispell files from http://www.sai.msu.su/~megera/postgres/gist/tsearch/V2/

Does anyone know how to solve this?

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