In version 8, using Firefox, when trying to use the "Private Remote Control" option in the quickview menu, the button does not work.
This problem was documented in the initial release of VSA R8, and was addressed in a patch release - http://help.kaseya.com/webhelp/EN/RN/index.asp#30765.htm
Applies to Firefox. Fixed an issue with the QuickView > Remote Control button. (IP-410/SVE-176)
Resolution / Workaround:
Update VSA server to latest patch release, as described here
Kaseya VSA R8