Usine blocking all virtual midi devices?

[lapidar]

I am using Bome Midi Translator (Windows 8.1) to provide 4 virtual midi ports for merging different apps to the same physical midi out.

Usine somehow seems to prevent access to the other virtual ports when started.
I tried to remove all midi ports from Usine except one but if I start any other software (like Midi Monitor, Ctrlr,...) they all tell me that their individual virtual port is not available / device not found. Do I miss something?

This is what my setup looks like in Usine:

[senso]

hello,
unfortunately I can't help you. But are you sure that Bome Midi virtual outputs are multi-clients?
senso+++

[lapidar]

Anyway thanks for trying to help!

I guess Bome is multi client because in my current working setup there is a standalone synth-editor, Ctrlr standalone and Studio One, all using seperate Bome Virtual Outs (1-3) which are merged by Bome to physical out.
Could have something to do with Bome though, that's why I tried a loopback device in that other thread (Midi thru problem).