The
iZotope_Radius_x64.dll is a dll included with SONAR and NOT part of Ozone. Do not put
C:\Program Files\Cakewalk\SONAR Platinum in the scan path. The VST dlls installed with Ozone 7 all begin with
iZotope Ozone 7. If they are not in your scan path maybe it would be better to uninstall Ozone and reinstall using the custom install and select a path in the existing VST scan path. It is surprising the VST3 plug-ins do not show up. They install in a fixed location scanned by SONAR.