Error 1336

Hello,

I have been attempting to install Draftsight 64 to my windows 64 system and keep getting an error. 

The error reads "Error 1336. There was an error creating a temporary file that is needed to complete this installation. Folder C:\\Windows\\Installer\\MSI45EB.tmp. System error code: 80"

I have tried disabling my firewall and antivirus, downloading an uninstaller program to remove draftsight completely, and manually removing all files...

What am I doing wrong?

OBO:  Jeff Ellis