On one of the editor tabs the source file name is underlined in red. Is this indicative of an error? If so, how does one find out what the error is? The application compiles with a couple of deprecation warning messages, but no error messages, but would this cause it? The application runs fine, but this one item is annoying me. I've tried commenting out huge sections of code to try to get rid of the underline, but to no avail.