Accidentally deleted VST plugins for Halion, Retrologue, etc - can't seem to reinstall?

I deleted the .vst(2) files from the Plug-in folder on my Mac since I was using VST3 plugins on Cubase. Now I am trying to get the VST(2) plugins reinstalled in the Plug-in folder but I’ve had no success. I tried reloading Halion Sonic SE Application and Instrument, but the plugin folder for VST never gets updated. I’ve tried reloading Cubase and again, no updates are made to the VST folder. Any ideas?