It takes a while depending on how much you are exporting, but the .csv will eventually appear in your downloads folder.
I am finding the .csv file has no data in it!! Off to find another plug-in 🙁
Yep this doesn’t on two themes – too hard. deleted.
The owner of http://www.wpreviewengine.com Gavin Basserabie has all but disappeared. He is not answering emails.
Be warned that he is still taking payments for this plugin, but not delivering the software. He is also not issuing refunds.
We have reported this to PayPal.