Droplets are "damaged"

I am saving a Droplet in Retrobatch 1.5 (running Mac OS 12.6.3) and when I drop files onto it, I get a Mac OS error about the app being damaged. Any ideas. My total use case for Retrobatch is using droplets, so hopeful there is a solution. It’s everything I need.

I just tried reproducing this on my end, without luck. The only difference is that I’m running MacOS 12.6.4 - if you update to that version, do things work as expected?