Ignition 8.1 install issues

I'm trying to install Ignition 8.1.28, and the install seems to run OK, but after I download the Designer Launcher and try to launch a designer, I get this error:

The first time I tried launching it, it also had something about problems installing OpenJDK, but unfortunately I can't replicate that issue to get a snippet.
Any ideas?

Is there a procedure for completely removing everything related to Ignition to start over from scratch?

Hi all,
Still trying to test out Ignition, but I'm unable to get the designer to launch.
I just uninstalled EVERYTHING and started from scratch but I'm still getting this error:

Any help would be much appreciated!! ignition81 troubleshooting designer support @Support

This forum is not support. You should contact support to have them look over your shoulder.