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/src/org/eclipse/ui/internal/ide/misc/ResourceAndContainerGroup.java
}
        problemType = PROBLEM_NONE;
        problemMessage = "";
        if (!validateContainer() || !validateResourceName()) {
			return false;
		}
        IPath path = containerGroup.getContainerFullPath().append(
                resourceNameField.getText());
        return validateFullResourcePath(path);
    }
    /**
     * Returns a <code>boolean</code> indicating whether the specified resource
     * path represents a valid new resource in the workbench.  An error message
     * is stored for future reference if the path  does not represent a valid
     * new resource path.
     *
     * @param resourcePath the path to validate
     * @return <code>boolean</code> indicating validity of the resource path
     */
    protected boolean validateFullResourcePath(IPath resourcePath) {
        IWorkspace workspace = ResourcesPlugin.getWorkspace();
        IStatus result = workspace.validatePath(resourcePath.toString(),
                IResource.FOLDER);
        if (!result.isOK()) {
            problemType = PROBLEM_PATH_INVALID;
            problemMessage = result.getMessage();
            return false;
        }
        if (!allowExistingResources
                && (workspace.getRoot().getFolder(resourcePath).exists() || workspace