If you take a look at the error log you will notice there is a failure with a code of 1603. There is another thread that specfically discusses this error message with some suggestions to fix the problem. Here is a link to it: http://forums.autodesk.com/t5/AutoCAD-Freestyle/In
If none of the suggestions work please let us know.
Michael Nauman, AutoCAD Freestyle TD Lead
Strange, could you please download free trial (you can activate the trial with your Freestyle SN later) from the link below:
During Freestyle download and installation, please make sure that your Internet security applications and antivirus software are turned off.
Autodesk Product Support