In Visual Studio 2010, I have just one project that cannot be published using the "Publish Now" button.
If I publish using the menu option instead, it works fine. I can then increment the version number, click "Publish Now" (or use "Publish Wizard..."), and get this error:
Cannot publish because a project failed to build.
However, no other error message is given. I managed to get screenshots of the output screen before it clears and flips to the Error List tab, but there is no mention there of any error. Clean & Rebuild doesn't fix the problem.
What do these two options do differently? Why is the build failing one way but not the other?