OCS 2007R2 Web Access loads a Blank Page

So today I ran in to an interesting issue with our OCS 2007 R2 web access server. The issue was when accessing the site to logon all you would receive is a blank page. I viewed the source and it was loading the page but nothing would display, it would also show the proper certificate for OCS. I tried everything that I could think of including uninstalling and reloading the web access components several times.  After a day of troubleshooting I discovered a blog post about another issue and it talked about the local security policy and that the Impersonate a client after authentication setting was missing IIS_IUSRS account. I checked our settings and discovered that we to were missing the IIS_IUSRS from that setting. after re adding the account back and a restart lo and behold the site loaded as it should.