Pg_restore error

Hi,

I dumped my database into a backup format.

Now, I'm trying to restore it via pg_restore test.backup

But I get the error: unsupported verison <1.12> in file header.

I googled it, and it says, this error happens if I try to restore a database created with a newer version to a server created with an older version.

But I have only postgresql 8.4. The backup comes from it. So the source and the receiver are the same.

Any idea?

EDIT: I use now .sql files with psql. And everything is fine now.