Core component problem, I can't add libraries, any help appreciated

Plex Media Server
31

While we could tested a nightly build to ensure that we fixed the problem, the design of the Play store strikes again by not allowing us to install the build in the alpha track. So while this build should work as it contains the fix, the Play store refuses to let us install the exact build we wish to release. So instead of continuing to fight this, we’ve pushed this version to beta and now it is waiting review by the play store.