What is a good fallback for when MVC Bundling Fails?

Question

In production an MVC site occasionally ends up with a broken bundle:

<link href="/bundles/css/global.css?v=" rel="stylesheet" />
<script src="/bundles/js/combined.js?v="></script>

Recycling the site will regenerate the bundles and make it work again.

At this stage, I'm not too concerned with the why, more what can be done as a fallback for when the bundle generation fails.

The bundles are created thusly (js):

bundles.Add(new ScriptBundle("~/bundles/js/combined.js").Include(
                        "~/js/file1.js",
                        "~/js/file2.js",
                        "~/js/file3.js"));

css:

        bundles.Add(new StyleBundle("~/bundles/css/global.css").Include(
                    "~/css/file1.css",
                    "~/css/file2.css"));