File_column - on_save Proc and marsheling

Rails
1

Hi All,

Using file_column, when I set a file_column field to nil file_column
adds an on_save method using a Proc. This blows away marshalling and
hence the ability to store this model into a session once I have
nilified the field.

def on_save(&blk)
  @on_save ||= []
  @on_save << Proc.new
end

Has anyone got a fix or workaround for this?
I am using file_column 0.3.1

Thanks,
Serge