Error messages are not reported in the output window when Build Target is selected. If there are no errors the assembling and linking is successful. However, if there is a syntax error, the output window says "Target Not Created" and does not report any error message. Why don't the errors and line numbers appear in the output window?
That's a good question. There is warning suppression in the tool if you want it, but I'm not sure if you can suppress errors messages. (if so, then maybe that's what's happening)