ERROR: cannot read block

Sorry for inconvenience, but search engine is not working so maybe I'm
talking about this kind of error again.

I can't explain exactly what happenend but at certain point one of my
PostgreSQL database tables had stopped working.

The error is :
ERROR: cannot read block 3 from rel__modelo

Can it be fixed? Vacuum can't access this table, so I don't know how to fix
it.

Best regards.

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José Vilson de Mello de Farias
Analista de Sistemas

Dígitro  Tecnologia  Ltda   -   www.digitro.com.br
APC - Aplicativos Orientados ao Cliente
E-mail: vilson.farias@digitro.com.br
Tel.: +55 48 281 7158
ICQ 11866179