I sent a bug report on this issue.
I have a Nexus 5x with 7.1.2 running the latest release of SE. The issue is that when I attempt to cast from SE to my Chromecast the application fails and crashes... Every single time. Does anyone else have this issue?
it's fixed in the latest version
Same problem on mi4c and nexus 5 running 6.0.1
It stopped working on the nexus after google play automatically downloaded android instant apps.
Same problem, Nexus 7 and Galaxy S7. App crashes when I try to connect to the Chromcast.
Adrian Rudnik commented
Same problem, two different devices (pixel and moto z play), two different Wi-Fi's, two different gen Chromecast. Crashes as soon as you pick a device.