Hi there,
Thanks for writing in! According to our Changelog latest compatible version of Visual Composer is v4.9.2. So the latest update that WPBakery just released is not available yet on Themeco end. If you have separate license for this, you can update but it’s not recommended. You should use the compatible version to avoid any potential conflict.
So I’d suggest you to use v4.9.2 for now and wait for next update while we test the compatibility with the new version.
Cheers!