Removing steven slate vsx

My friend tried to use his steven slate vsx headphone plugin on my computer. He could not finish the activation, as he was missing some info. He has since returned the headphones to the vendor. Now I cant get the software off of my computer. I have uninstalled both the plugin software and the ilok software. I have completely removed everything with REVO uninstaller, but still get this message:

“In order to run this software licence support components need to be downloaded and installed
Do you want to download and install them now?”

Ive uninstalled everything, and there is no trace of the software on my computer. Any advice would be appreciated

Since this refers to a steven slate audio product maybe you could consult with them?