I just tried the rstudio-server preview and it works fine, but then I wanted to try the Pro preview in evaluation mode and I get this error when logging in to the web interface:
"the browser was disconnected from the R session because another browser connected .."
I tried installing it on both a Centos7 and an Ubuntu 18 machine and they both produce the same issue with any login. The verify-installation option just says "Job Launcher integration not configured" which I don't think is mandatory. Also it does this for both NFS and local users. Any ideas ?