I have been using Vegas Pro 19 for several years and it has worked fine.
I recently installed a Blackmagic Design DeckLink Studio 4k card. The card is working fine with the Blackmagic Media express software.
However, when I now try to start Vegas 19, it does not start. I see it checking ASIO, and then it just closes.
If I physically remove the Decklink card, Vegas 19 starts as normal.
I tried the trial version of Vegas 22, and it has exactly the same issue.
Any suggestions would be appreciated.