The error message” CreateInstance failed for EPiServer.Diagnostics.ITransformer. Class not registered.” occurs when EPiServer isn’t able to initialize itself on application start event in EPiServer global. So this error message said only that something is wrong in the installation phase.
The statistics functionality is based on the Baselibrary class factory that register several classes at the application start event, the reason that you site can’t start is that a EPiServer.LogGenerator control is placed on the master page of the sample site and is the first thing that you probably access.

This is NOT indicating that the statistics not working.

Read the EPiServer log files to see what really went wrong.

Version author:
Mattias Lövström

EPiServer version

All