After a successful build, I launched Firefox Nightly, I got a command prompt screen that started outputting messages. Many of them are warning messages, should I be worried? Also, certain warnings (assertions) causes pop ups that need to be dealt with, is there a way to get rid of that?

'''Short Answer1''': No, the warning messages are normal. If you're using command prompt to start firefox.exe, you can type:<pre>set XPCOM_DEBUG_BREAK=warn</pre>That should suppress all pop ups. This is only necessary for windows. Mac and Linux machines should be set to this is normalby default.