I’ve noticed this in earlier releases, but having just moved on to 10.0.0.2485 I thought worth questioning.
Occasionally I get this sort of thing. A build success, yet one or more errors listed. I couldn’t be sure, but it may be the case that the “did you mean” is the common factor i.e. it’s flagged as an error, but at the same time seen as a warning ?
Do you have “treat fixable errors as warnings” turned on (either VS-wide for in your project)? If so the compiler will still emit the error, but use its best guess (i.e. the recommended fix it shows with “did you mean X”, and move on, and the build will succeed (so that, say a silly typo won’t stop you from running your app).