gistfile1.sh

danking@beverly # drracket 
set-loaded-mask method in bitmap%: contract violation
 expected: (is-a?/c bitmap%)
 given: #f
 in: the 1st argument of
     the set-loaded-mask method in
      bitmap%/c
 contract from: <collects>/racket/draw.rkt
 blaming: 
      <collects>/drracket/private/frame-icon.rkt
 at: <collects>/racket/draw.rkt:58.19
  context...:
   /usr/local/lib/racket/collects/racket/contract/private/blame.rkt:89:0: raise-blame-error
   /usr/local/lib/racket/collects/drracket/private/frame-icon.rkt: [running body]
   /usr/local/lib/racket/collects/drracket/private/drracket-normal.rkt: [traversing imports]
   /usr/local/lib/racket/collects/drracket/drracket.rkt: [running body]
1 danking@beverly # racket --version
Welcome to Racket v5.3.2.