i have SKP 2018 and i just intalled latest floor generator extension from the rbz file downloaded from Sketchucation.com, at the begining the extension worked fine, and showed the propper UI where u tweak parameters and such, but, next time i opened SKP that same interface didnt show, instead, it showed a window with the script behind the extension, erased the extension from the plugins folder and then resintalled again and shows the same. I must add that this started with Floor gen, but also now is happenig to other intalled extensions (not plugins like enscape or vray) like Fredo.
Btw, in my laptop's system where i have the same version of SKP installed enscape and vrayNext cant get along, whenever the two r installed, SKP crashes (i mean itstarts, but crashed after that)there can be only one intalled of these two