I downloaded the Mac binary from https://s3.amazonaws.com/paperspace-node/v0.1.10/mac/paperspace and used CTRL-click Open.
(The CTRL was needed because the developer is unidentified. I then provided authentication when prompted.)
When I chose to ‘Open’, instead of seeing an icon that could be moved to Applications, I saw a bunch of garbled text.
I also modified v0.1.10 in the link to v0.1.11, and obtained the same result.