Encoding errors when upgrading from 7.4 to 8.1

Hi,

I am upgrading from 7.4.8 -> 8.1.2 on Linux 2.6.14.3 #1 SMP

I have installed 8.1.2 and created the database (with encoding 'UNICODE', as
I had done in 7.4.8) and am trying to load a 7.4.8 dump file but I am
getting a few errors like this:

psql:bugasbase2-backup:45880: ERROR: invalid UTF-8 byte sequence detected
near byte 0xb5
CONTEXT: COPY array_scheme, line 17560, column gene_identifier: "B?G(at)S
(0G11)"

This dump file will load error free into 7.4.8.

Does anybody have any ideas why this is failing in 8.1.2?

Thanks for any help

Adam

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