Some waves (vocal) plugins don't work anymore. Until now it worked fine.
The plugin WaveShell1-VST 9.92_x64 doesn't load. 
Message:
X VST Scan
Error [WaveShell1-VST 9.92_x64] Open

Anyone with the same issue?
Statement of Waves: Unfortunately Cakewalk is not an officially supported host with Waves' V9 plugins...

Have you tried running Waves Central? You might need to do an update or something as prompted in that.

Make sure you have the latest / greatest Waves Central.  Once you do,  Uninstall all plug ins. (Under the Install option).  Open Cakewalk.  Let it scan the fact that you have no Waves any longer.  Close Cakewalk. Open Waves Central.  Reinstall all your plugins.  Open Cakewalk.  You should be good.  

Great guys! It works again.
Had to uninstall everything, scan and reinstall like Midiboy said.