Kubuntu 18.04 is Ubuntu 18.04 but with some other Desktop Enviorment. I wouldn't say that the KDE is the Problem and gnome not but I couldn't say anything else right now.
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I tested it out on the latest Ubuntu distro and there is something wrong with the x86 files. Older releases seem to work, but newer ones do not. I have a feeling it may have been something to do with updating Unity and our build process not playing nice with it. I'm looking into a fix and will keep you posted! : )