Oracle Database 11g XE Installer Error

Hi Folks, I got an Oracle database 11g XE Express Edition to get installed in the system. Unfortunately, during installation I ran into an error message. Thought reason might be the ports not good, so changed the ports and installed again. How to setup the key data value? Help me to resolve this error.

The installer is unable to instantiate the file C:UsersMcLAUGH~1AppDataLocalTemp{078E83D7-3FCC-4A72-903B-995C7CE44681}KEY_XE.reg. The file does not appear to exist.
