Make sure when the backend cannot be downloaded or the site resolved that we're forgiving until we try to use the provided FFI functions.

example1/example.rkt

@@ -10,7 +10,9 @@
 
 (provide
  (all-from-out racket/gui)
+ (all-from-out "../main.rkt")
  example-1-window%
+ run-example
  )
 
 (define ww-debug displayln)