Dear Racketeers When enabled the "Open files in separate tabs ." setting, Racket fails to open a file, with the following error message: sequence-contract-violation: negative: method end-edit-sequence cannot be called, except in states (in-edit-sequence) context...: C:\Program Files\Racket\collects\framework\private\text.rkt:1740:4: after-edit-sequence method in ...ork/private/text.rkt:1611:2 C:\Program Files\Racket\collects\mred\private\wxme\text.rkt:758:2: end-edit-sequence method in text% C:\Program Files\Racket\collects\drracket\private\unit.rkt:2996:6: change-to-tab method in ...ket/private/unit.rkt:1376:4 C:\Program Files\Racket\collects\drracket\private\unit.rkt:2966:8: core3833 C:\Program Files\Racket\collects\mred\private\mrmenu.rkt:250:14: command method in basic-selectable-menu-item% C:\Program Files\Racket\collects\racket\private\more-scheme.rkt:146:2: call-with-break-parameterization C:\Program Files\Racket\collects\racket\private\more-scheme.rkt:263:2: call-with-exception-handler C:\Program Files\Racket\collects\mred\private\wx\common\queue.rkt:451:6 C:\Program Files\Racket\collects\mred\private\wx\common\queue.rkt:502:32 C:\Program Files\Racket\collects\mred\private\wx\common\queue.rkt:650:3 When disabling this setting, and restarting Racket, I can open files in separate windows. But when trying to click Menu>File>New Tab, same error as above. I'm on Windows Vista, 32Bit, Service Pack 2, English. Is there something I can do? Thanks in advance. Martin
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