Engine Crashes on start up

[Lumarious]

Not sure what happened, I didn't open the engine for a couple months, and now it crashes on start up. I've tried making sure I have the right java version and everything, but I can't get it to work.

I installed from flatpak and had no issues a couple months ago, but now its crashing immediately... This is a big problem for me, I have a project that is relying on this engine! D:

Not going to lie, I CANNOT figure out how to install an older java version. Been looking all morning... my current version is:
openjdk version "1.8.0_422"
OpenJDK Runtime Environment (build 1.8.0_422-8u422-b05-1~22.04-b05)
OpenJDK 64-Bit Server VM (build 25.422-b05, mixed mode)

I'm pretty sure this was the same version I was using when I last used the engine.

Any help is appreciated...

I'm on pop!_os btw.

[Lumarious]

UPDATE: I was able to install and run the engine on my laptop, also using pop!_OS. When I install it over there, its a couple gigs, but on my desktop, says, up to 400.5 MBs.... I'm looking to see if there are any left over files on my desktop PC that might be causing an issue. I'm trying to do a complete reinstall, but not having any luck so far...

[Lumarious]

Does anyone know how I can completely remove the install and everything related with the install? I've tried using "apt-get purge 'packagename'" but I can't even find the package via that method. It should be "com.bladecoder.adventure-editor", right? Because the command "flatpak run com.bladecoder.adventure-editor" runs the program, but all I get is a black screen and then it crashes immediately. I can't find it by using the command "dpkg --list" either...

I'm completely at a loss here!