[Plugin: WP Static HTML Output] Generated zip file is empty – what am I doing wrong?

Leon, I just ran the plugin for the first time and the zip file it creates is empty. I am running WAMP.

Is there a log file I can reference to see what happened? I get the “Archive created successfully:…” message and the export log appears to be populating fine.

Thanks for any help.

http://ww.wp.xz.cn/extend/plugins/static-html-output-plugin/