Error reported by Master section

What shall I do about this?

I’ve tried a few things, including rebooting, deleting inactive clip plugins. There are no plugins in my Master section.

Here’s what other stuff looks like:

Even if there is no plugin, try to use the Reset button on the Master Section.

If this is not enough, and despite the error message, the problem could come from the source, the montage. Hence try to disable some plugin to see where the problem could come from.

Thanks. I’ll try it. Wavelab 12 opened the montage fine, and rendering went fine. It seems the conversion to a new type of montage compatible with W12 seemed to help.

That said, I will try to fix my Wavelab 11 with a reset too. I always like using the same version of a program that my projects are created with.