Fatal error: Call to a member function MetaTables()

I'm trying to install Concrete5 on IIS 8.5, Windows Server 2012 R2 and keep getting this error when I navigate to index.php to install.

Fatal error: Call to a member function MetaTables() on a non-object in C:\inetpub\wwwroot\TestSite\concrete\startup\exceptions.php on line 7

I found this article (http://www.concrete5.org/community/forums/installation/fatal-error-call-to-a-member-function-metatables/) and tried adjusting the permissions but this did not change anything. Anyone know what could be wrong?

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exchangecore replied on at Permalink Reply
See what I did to solve this issue:http://www.concrete5.org/community/forums/installation/fatal-error-...

Try removing permissions completely from your inetpub/wwwroot/testsite directory and then re-applying them. I've run into some problems where when I unzip a file into my web root in 2012 permissions don't get applied down through if the user I unzipped the files with didn't have full control access to the web root folder.