An editor or project is attempting to save a file that is modified in memory. Saving files during a build is dangerous and may result in incorrect build outputs in the future. Continue with save?I am not sure what a better word is but "dangerous" just bugs the heck out of me. I mean I understand software is important and all but dangerous? Really? What's the worst that can happen? You mess up the build and are forced to do a "clean" and "rebuild". Big deal. Generally, I don't think anything that can happen in Visual Studio (short of blowing up your computer) should be termed as "dangerous".