No, nothing open (I know how to install a plugin!!) More info too. Since this happened yesterday, when I booted up this morning all my NVidia Graphics drivers were missing - very scary. I had to reinstall all graphics drivers - and the *only* thing I did yesterday was the attempted installation of this plugin.
That will teach me! There are definite problems with this installer that need to be fixed, IMHO - free or not, it is not stable.