Post / Page export failure

I’m concerned that this may not be compatible with the current WP version. I get export failures using the plugin locally & on a live site. Below is the contents of the output file from one export attempt. I have similar errors from the local version. This plugin would be very heplful with reviewing content from a large site, so any advice would be helpful:

Warning: filesize(): stat failed for /home/legalcog/public_html/klwreporters.com/wp-content/uploads/2016/09/output_1475016788.docx in /home/legalcog/public_html/klwreporters.com/wp-content/plugins/aspose-doc-exporter/aspose_doc_exporter_admin.php on line 267

Warning: Cannot modify header information – headers already sent by (output started at /home/legalcog/public_html/klwreporters.com/wp-content/plugins/aspose-doc-exporter/aspose_doc_exporter_admin.php:267) in /home/legalcog/public_html/klwreporters.com/wp-content/plugins/aspose-doc-exporter/aspose_doc_exporter_admin.php on line 267

Warning: readfile(/home/legalcog/public_html/klwreporters.com/wp-content/uploads/2016/09/output_1475016788.docx): failed to open stream: No such file or directory in /home/legalcog/public_html/klwreporters.com/wp-content/plugins/aspose-doc-exporter/aspose_doc_exporter_admin.php on line 269