when opening these plugins. Both C10 and 10.5 pro
Make sure you have the very latest plug-ins updates installed, please. If the plug-ins are using iLok, make sure, you have also iLok software and driver installed, please.
And if you are on Windows, you can try to start Cubase in Windows 8 compatibility mode, which solves some iLok - plug-in Win10 incompatibility issues.
Dear Timm, load any sound toys plugin before softube, from same dealer where u get softube.