Could the rhfontset.apj file be empty? How this would happen for all projects I'm not sure, but it would be worth checking before doing a full uninstall/reinstall.
How would I be able to view the contents of this file? Also, after posting my message, I went to another machine that has a copy of RH8 installed and opened some of the same project files and the html code looked fine. I am leaning more toward the fact I will need a uninstall/install performed.
I'll wait another day or two to contact our IT team to perform this task.
The rhfontset.apj is just an XML file with another extension. Open it in notepad. It should hold quite a number of font entries.
Backup your project, then replace the rhfontset.apj file from a working project to your own project. Delete the CPD and open the project again. Then go to HTML view and restore font to Courier 100%.