base and postgres

Hi guys

I have created a very simple database in postgres and tried to write 
data into it. I got the following error message:

Error code: 1

pq_driver: [PGRES_FATAL_ERROR]ERROR:  array value must start with "{" or 
dimension information
LINE 1: ...O "public"."Bladetypes" ( "ID","type") VALUES ( '1','Knife')
                                                                ^
  (caused by statement 'INSERT INTO "public"."Bladetypes" ( "ID","type") 
VALUES ( '1','Knife')')

the table looks like this:

CREATE TABLE "Bladetypes"
(
   "ID" integer NOT NULL,
   "type" character varying[] NOT NULL,
   CONSTRAINT "Bladetypes_pkey" PRIMARY KEY ("ID")
)

ALTER TABLE "Bladetypes" ADD COLUMN "ID" integer;
ALTER TABLE "Bladetypes" ALTER COLUMN "ID" SET NOT NULL;

ALTER TABLE "Bladetypes" ADD COLUMN "type" character varying[];
ALTER TABLE "Bladetypes" ALTER COLUMN "type" SET NOT NULL;

any ideas?

Thanks

Bernhard