Can't export wordpress site

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http://www.linuxquestions.org – Greetings I have an issue with the plugin "Duplicator": https://www.youtube.com/watch?v=VdvOGV2eIjE When i try to create the package, it says that everything went ok, but the package is not created. I have used this plugin before and i never hah problems, but i don't know why this happens now. Maybe my site size is related, before it was 20mb y now is 800mb, maybe this plugin doesn't support a great volume of data? (HowTos)