Hi Martin
Thank you for answering and apologies for not adding more details.
I am on Windows 10 and i have only seen this error yesterday, and on both occasions it was when I was working on a cubase project of just one track
I have an Akai MPK mini, nano Kontrol2, a Kenton freak 16 and a presonus Studio 24c of which the Midi inputs are being used by the freak
i did close and start cubase up again and still got the problem
I have now restarted the computer (should have done this first, i know, sorry), and have loaded cubase up again this morning, and will leave it loaded without doing anything for a few hours (its father’s day over here
I have been using cubase for a couple of months with no problems (except having to go into the Task Manager often, to close it fully)
I will post back in a couple of hours to see if the computer restart sorted it, or that i have that error again
A few hours later, with cubase open, the warning came again, but i had just been watching a tutorial on youtube (which i have done many times before with cubase loaded), so not sure whether the switch from that may have caused it
I will load cubase on its own for a time, and see if that was the case
Sorry, this is definitely not a Cubase error message. If this would be Cubase, it would have common Cubase window view and there would be Cubase logo in the message. All Cubase messages have the same view.
Is there any other software using MIDI in the background? Maybe you can find out in the Task Manager where does the window belong to.