Problem uploading file

  • I am trying to add a digital download file using the plugin iSell. When I try to upload the file, which is nearly 20MB, it seems to be uploading then when it has finished I get the error message:

    “9780956374455.mobi” has failed to upload due to an error
    Sorry, this file type is not permitted for security reasons.

    Can anyone explain please? Is this a WP issue or something else?

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Viewing 3 replies - 1 through 3 (of 3 total)
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