Last night one of our editors came to me and announced that the preview window in Vegas 13 had turned black. I went through all the troubleshooting steps I could think of to no avail. No joy.
I found a solution on YouTube that has mystified me. I selected the entire project and copied it. I then opened a second instance of Vegas and pasted the copy into it. And there was the preview window in the new instance, working perfectly as designed.
So two questions: any thoughts on why the preview window suddenly blacked out, and why would pasting a copy to a new instance of Vegas correct this?