Sometimes you can run into Revit installation errors.  There is a good “checklist” of steps to take to try and get past these over at RevitDE.  It includes things like disabling UAC and antivirus programs, ensuring you have admin rights etc.

It also describes how to use the Autodesk Uninstall Tool (a new feature in 2014 products).

Read more:
Google Translate of RevitDE post

“For those that have seen enough of the standard Revit textures, there are remedies.
Recently, the company offers under the name LG Hausys HI-MACS textures for download.
The free file can be found at this link:″

ZIP file here

Google Translate