I get this "There was a problem installing this game" error with 1.1.2. (I never had the previous version, I don't think.) I've even tried re-uploading it to the site once, and it's failed to install after download several times.
Viewing post in Version 1.1.2 Released comments
Yes! First I extracted the .zip to .pdx, but that wouldn't upload (I've had this problem for all .pdx files, they basically just get "stuck" uploading to the play.date site). But then I tried re-archiving it on my mac, and that actually uploaded just fine, and I was able to download/install it! Plays great, thanks for making it!