tiffcp produces this error message when processing your test tiff with JPEG compression:
JPEGSetupEncode: RowsPerStrip must be multiple of 8 for JPEG. I have committed changeset 6ffbb63251c8, which at least captures and displays the error message. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]

