[racket] DivaScheme plt broken, due to changes in GUI in v.6(?)

I should have added the error message I'm running into, in case anybody
recognizes something. (I'm a rank novice myself.)

error: push-into-mred
  context...:

/home/wade/.racket/planet/300/6.1.1/cache/divascheme/divascheme.plt/1/6/diva-link.ss:303:6:
push-into-mred

/home/wade/.racket/planet/300/6.1.1/cache/divascheme/divascheme.plt/1/6/insert-keymap.ss:405:4:
revert&exit

/usr/racket/share/pkgs/gui-lib/mred/private/wxme/editor-canvas.rkt:349:2:
on-focus method in editor-canvas%
   /usr/racket/collects/racket/private/more-scheme.rkt:147:2:
call-with-break-parameterization
   /usr/racket/collects/racket/private/more-scheme.rkt:264:2:
call-with-exception-handler
   /usr/racket/share/pkgs/gui-lib/mred/private/wxwindow.rkt:225:22:
on-kill-focus method in ...private/wxwindow.rkt:148:4
   /usr/racket/share/pkgs/gui-lib/mred/private/wx/common/queue.rkt:451:6
   /usr/racket/share/pkgs/gui-lib/mred/private/wx/common/queue.rkt:502:32
   /usr/racket/share/pkgs/gui-lib/mred/private/wx/common/queue.rkt:650:3
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