Ok so I have this storedproc in my SQL 2008 database (works in 2005 too / used to) ...

CREATE PROCEDURE [dbo].[SetBinaryContent]
    @Ref nvarchar(50),
    @Content varbinary(MAX),
    @ObjectID uniqueidentifier
AS
BEGIN

    DELETE ObjectContent WHERE ObjectId = @ObjectID AND Ref = @Ref

    IF DATALENGTH(@Content) > 5
    BEGIN
        INSERT INTO ObjectContent
            (Ref,BinaryContent,ObjectId)
        VALUES
            (@Ref,@Content,@ObjectId)
    END

    UPDATE Objects SET [Status] = 1
    WHERE ID = @ObjectID
END

Relatively simple, I take a byte array in C# and chuck it in @Content i then give it a guid and string for the other params and off we go.

...

Great, it used to work ... but it don't anymore ... so erm ... What's wrong with this stored proc?

I've stepped through my C# code thinking I screwed up somehow in that but it definately adds the params and gives them the correct values so what would cause the server to just stop executing this storedproc correctly?

When called this proc executes but nothing changes in the db ... no new records are added to the ObjectContent table.

Weird huh ...