Kontakt 7 instant crashes

Since Kontakt 7 became available I haven't been able to use it, either in Standalone mode or inside my DAW (I have Studio One and Ableton and same issue). Kontakt opens momentarily for about half a second and immediately crashes, no error message or anything like that. I have uninstalled and re-installed multiple times over the last year or so, or however long it's been since Kontakt 7 was available. Every time I re-install it's the same issue with it.

I have given up with it and just settled for using Kontakt 6 in the meantime.

I have tried the numerous troubleshooting / fixes that are available through Native Instruments website and nothing works.

Even one of the guides which I have linked says to delete Kontakt 7 from localappdata, and then says to "Rename the "default" folder to "default_OLD": But how can I rename that folder after deleting the Kontakt 7 folder on the step before? The default_OLD folder is a subfolder inside of the Kontakt 7 folder.

Anyway, anything I have tried it won't work and pretty sick of the issues with it. I am not even sure what the latest version of Kontakt 7 is? I have version 7.6.1 and according to a few links there are newer versions than this, however this in no update showing in Native Access for Kontakt 7 for me to update.

https://support.native-instruments.com/hc/en-us/articles/115004169849-Kontakt-Crashes