I disagree with your statement that "the software functions exactly as it should". The VEP5 marketing and product page boasted "Up to 48 MIDI input ports for ALL plugin standards (including AU & VST)" — it did *not* mention the required second half of the sentence, "Providing Logic users can afford to spend several weeks sifting through forum posts in order to figure out why an obscure workaround doesn't do what it should".
I've created a very simple Logic session that wasn't behaving as expected and sent it to VSL support. After two weeks with no reply I asked for news and the reply can essentially be summed up as "Ah, the Logic issue. Yes, well, we're working on it."
Logic, you know, that obscure and marginal DAW that nobody's heard of before.
However, I also strongly disagree with someone's post (elsewhere on these forums) qualifying VSL's products as crap. I've been working with VSL and VEP4 for a long time with essentially zero problems and I always found VSL's creativity very interesting to dig into. This is *precisely* the reason I paid for the VEP5 instantly, without even waiting for early adopters to test it beforehand. It's a good thing I did not install it on my main DAW. But the bottom line is that I shelled out over 100 euros only because I was interested in the MIDI ports feature, which is evidently *not* working as expected. Tricking Logic into something it was not designed to do and then blaming Logic for its single-processor issue isn't really a solution. That maddening problem with Logic has been known for a long, long time.
I'm still using VEP4 which is as stable as any piece of software can possibly be. I'm just very, very disappointed.