In using Vegas Pro 13 on a new Windows 10 computer, I find that I cannot open AVI files. It's not a codec issue; the file will not open at all because Vegas doesn't recognize it as a type of file it can open. I've used Vegas Pro for years and do not remember having this issue, but it has been five years since I got a new computer. I've had trouble with the codecs in AVI files, but they always opened.
How can I fix this issue?