type unknown?

Greetings one and all,

I am porting all my databases from a 32 bit Postgres engine to 64 bit  
Postgres.  To do this, I did a pg_dumpall and I'm restoring.  I got  
an error on the restoration as follows:

psql:/dbsdisk/data_load/dbdev_all_080915.sql:3920581: WARNING:   
column "collection" has type "unknown"
DETAIL:  Proceeding with relation creation anyway.

The view that was being processes when the error occurred is:

     View "public.v_cos_master_year_count"
    Column    |       Type        | Modifiers
-------------+-------------------+-----------
  collection  | text              |
  year        | character varying |
  entry_count | bigint            |
View definition:
  SELECT 'cos'::text AS collection, cos_master.year_published AS  
"year", count(cos_master.id) AS entry_count
    FROM cos_master
   GROUP BY cos_master.year_published, cos_master.collection
   ORDER BY cos_master.year_published;

There are a number of views in this particular database where  
"collection" is used in this way and they all get this warning.  Text  
is a valid type, albeit nonstandard.  What is triggering this warning?

Thanks,
Carol