Missing Plugins on Wavelab 9.5 suddenly

Mac os 10.14.6, Wavelab 9.5 suddenly lost my plugins, only some show up. Haven’t updated anything, or changed any settings. Also, constantly getting this message:
An error has occurred. The configuration file could not be written successfully. Make sure the destination directory can be written to.
‘/Users/Shared/Library/Preferences/Steinberg/WaveLab Pro 9.5/Cache/lru.txt’

Verify that the write access are possible for this folder.
And of course, reboot the computer, if not already done.

Thanks for your help. I’m not sure what I did, but the plugins all came back. Must’ve been something in Preferences…thanks anyway. Appreciate it