Error installing jacket

[ttscoff]

I have an update to Sidecar (v3.0) that works fine if I place the file in the support directory manually. But if I remove that and then double click the .jacket file from elsewhere, I get an error when it tries to install. Any tips on why this might be happening?

Distro version: http://ckyp.us/Ehlhsv Current code: https://github.com/ttscoff/sidecar/tree/master/com.brettterpstra.sidecar.jacket