3d-model

Checksum error An error occurred while updating the package checksum.

download-checksum: error from server
  URL: http://code_man.cybnet.ch/racket/3d-model.zip.CHECKSUM
  status code: 400
  context...:
   /home/pkgserver/racket/collects/pkg/private/network.rkt:59:3
   /home/pkgserver/pkg-index/official/update.rkt:31:2
   /home/pkgserver/racket/collects/racket/private/list.rkt:263:2: filter
   /home/pkgserver/pkg-index/official/update.rkt:174:0: do-update!
   /home/pkgserver/pkg-index/official/common.rkt:150:0: run!
   /home/pkgserver/pkg-index/official/update.rkt:185:0: run-update!