The problem was that the old instance loaded in a separate window. Right-clicking the instance in the main server window and selecting "Snap Instance" put it back into the main window and now everything works as expected.

Upgrading to VEP7 broke the interface for me. I loaded a VEP6 instance and I get sound in Cubase just fine, but I cannot interact with the UI at all. I can hover over all items and I can see the UI react to that (e.g. the tooltip in the lower left corner changes) but clicking anything does nothing at all. When I hold down Alt I can see that the Menu bar underlines the shortcuts (E for Edit for example) but menus do not open. When playing music faders and everything update just fine.

The server window itself is also working fine. It's just the instance window that is broken. This in on Windows 7.

I'm building an orchestral template and want to use VEPro for all of my mixing, and then just have Cubase connect to it for inputting MIDI and outputting the final mixing result.


One problem I've run into is that VEPro does not seem to allow to load VEPro Audio Input plugins (to avoid endless loops?).

I currently have 5 instances running of which one is the final mixing stage (with e.g. reverbs for different rows in the orchestra). I want to route the audio output of the other instances to the one mixing instance for easy mixing consistency.
However to do this, I first have to route the audio back to Cubase, insert the respective audio input plugins there to route the audio back to the VEPro mixing instance which kind of defeats VEPro's purpose of decoupling the mixing from Cubase. Is there an easy way to route audio around inside VEPro between different instances that I am missing?

I had the exactly same issue some time after upgrading to VEPro 5.

What fixed it for me was upgrading both Cubase and VEPro to the latest versions. After that it loaded just fine (doesn't get stuck at 1%) but in the process it duplicated all my instances but with generic names ("Unpreserved x" instead of "Strings").
After that I reassigned all VST instruments to the proper instances, saved and reloaded everything. From then it worked fine again.