During installation of the Keeps software an exception is thrown in ExtentPlaceholderCreator.
Microsoft SQL Server issue.
Problem has been seen with MS SQL SERVER EXPRESS 2012 SP3
Edit the 'c:\Websites\Feenics\'web.config' file and insert the text shown in the screen shot below at the exact location shown.
The full text cannot be inserted here because it is in XLM format which will be executed by the browser, click HERE to get text file for copy/paste purposes.