Glad to hear it'll be fixed soon. =)
A quick workaround I've used is to put this in javascript:
Page.ClientScript.RegisterStartupScript(this.GetType(), "refresh", "window.location.href=window.location;", true);
So when your page first loads, javascript will cause the page to refresh, and daypilot calendar will be rendered correctly. I know this isn't the best way to go about doing things, but it's a quick fix until the next release for those interested.