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...inux to Windows XP for the first time. I am running PostgreSQL 8.0 and the postgres-pr 4.0 adapter. Some of the queries in my Rails app work, but for others I get a weird error: ArgumentError: Invalid Ruby/cstring: select sa.name as activity_name, max(sah.created_at) as created_at from site_activity_histories sah, site_activities sa where sah.user_id = 17 and sah.site_activity_id = sa.id and sa.viewable = true group by activity_name order by created_at desc ...<snip>... c:/development/ruby/lib/ruby/gems/1.8/gems/activerecord-1.13.2/lib/active_record/con...