Can't export in Rapidweaver 7

Please provide a few details in the following format so we can help you as quickly as possible!

RapidWeaver Version: *7.0.2
System Version: 10.10.4
Hardware: 13-Inch MacBook Pro with Retina Display, 2.7GHz Processor, 128 GB SSD Storage, 8GB Memory.

When pressing export site, I can chose to what folder, but after that nothing happens. No export is done

Expected Result:
Site should be exported?

Additional Links:
(If you have any projects files, screenshots or videos of the bug in action please link to them here.)