That's not an error message, that is a normal message after a successful compilation.
That's why error was in quotes.
Can you please tell me how you created an new tab, because I can't find the button indicated in the tutorial to make a new tab.
Which version of the IDE are you using? On 1.0+, there is an icon on the right side of the dialog (on Windows, anyway) that looks like the one in the tutorial (an arrow pointing to the right) that is used to create a new tab.