Thank you for the help!
In case someone searches for this issue I'll layout what I did and what worked.
I had already tried excluding the folder. That did not work.
I tried excluding RBX*.temp that did not work.
I even tried excluding .tmp and that did not work.
I followed your suggestion to kill Immunet in the task manager... Even though I was running with an administrator account, when I tried to shut down Immunetprotect_6.0.8 from the services tab it gave me "Access Denied." I have never been able to shut down Immunet from within the task manager. I have always assumed that this a security issue where Immunet does not want just anyone or anything shutting down the service.
Following that line of thought... This is what worked. I uninstalled Immunet. Installed Roblox. Then re-installed Imunnet. Took just a few minutes and did get the job done.
Prior to Immunet I used to run ESET. ESET has a "Temporarily Shut Off Protection" button. I used to use that for installs that had issues. I looked all over Immunet for this. I even clicked off every selection in Immunet and still could not get the install to go through. For gamers, it would be nice to have a "Temporarily Shut Off Protection" button.
Thank you for the help!!!