Given up on this extension
I've completely given up on this extension.
It's obvious they are not releasing an update anytime soon with the target fix. Instead, they'll wait for the next major release and add the target code into it, calling it a new "feature", and make you pay for it.
Its business practice like that that sinks companies. We'll see.
I will recommend one fantastic extension for you though - not by webassist.
Check out Flexi CSS layouts by Extend Studio:
It's fantastic. Saves me hours of site structure design, and hasn't crashed, or caused any problems. Their support is great, and they call true features, features.