Bug 134740 [Wizards] PDE product wizard is not obvious to use.
see attached image. The wizard for creating a new product opens with a file name initialized to ".product" which is selected. Generally this would imply that this is a good default but if you start typing you will replace the text with something else that is also a good name. If you require an extension for a file you should add it yourself like the "Export Archive" wizard.
bundles/org.eclipse.ui.ide/extensions/org/eclipse/ui/dialogs/WizardNewFileCreationPage.java
e
																				.getCause()
																				.getMessage()));
									}
								}
							});
				}
			}
		};
		try {
			getContainer().run(true, true, op);
		} catch (InterruptedException e) {
			return null;
		} catch (InvocationTargetException e) {
			
			
			IDEWorkbenchPlugin.log(getClass(),
					"createNewFile()", e.getTargetException()); 
			MessageDialog
					.openError(
							getContainer().getShell(),
							IDEWorkbenchMessages.WizardNewFileCreationPage_internalErrorTitle,
							NLS
									.bind(
											IDEWorkbenchMessages.WizardNewFileCreationPage_internalErrorMessage,
											e.getTargetException().getMessage()));
			return null;
		}
		newFile = newFileHandle;
		return newFile;