So when I imported my library this weekend I noticed, on the Focus popup, that 1/1 Album type was unknown. I managed to track down that one album and override the type. However, in the process I saw several other albums without a type as well, but Roon only complained about one of them (now fixed). Any ideas why this behavior? Here’s an example of one of the albums where the unknown album type didn’t cause a problem, and was treated as “Main”:
Here’s the one that did cause a problem, which I had to override as “Main”: