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## Error messages

Error Message | Possible causes or solutions
TI Communication Manager quit. Would you like to restart it or quit TI Data Editor? | An error occurred during the communication process. To restart TI Data Editor, click Launch.
The application TI Data Editor has unexpectedly quit. | To close the error window, click Done. If you need to continue, reopen TI Data Editor. Note: You lose all unsaved data when this error occurs.
File is not valid. | The data in the file you sent may contain an e, +, or -. Sending list or matrix data containing e, +, or - to a TI‑89, TI‑92, or TI‑92 Plus device or a Voyage™ 200 Personal Learning Tool results in an invalid file error message.

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