Hi, Selene
First of all I have to note that I'm using OpenSuse and run NI under Wine.
Now pre-history of problem - I ran installation for the first time and it began to install, but smth gone wrong ang I stopped it. Then I tried to uninstall those part which were already there. It doesnt work. So I simply delete folders. After that I've got an error on any next installation. As I think some things left in registry.
After that I create new Wine prefix (it like new Win installation) and install NI into it.
Something like this 🙂