And just to add to what might have happened.

The next things the Font Copy utility does after adding the font(s) to the psres area is that it effectively does a "change dir" to the XYV_EXECS/psres folder and then moves (not copies) PSres.upr to PSres.bak and then it runs the XYV_EXECS/bin/makepsres program that's responsible for recreating the PSres.upr file (in that same folder).

It sounds like the error that happened prevented that program from recreating the PSres.upr file. Bart could be right that it had something to do with the new font you added, or it could have been some kind of permissions problem. You may need to get to a command prompt (at the XYV_EXECS/psres folder) and manually recreate those last steps that the Font Copy utility does in order to get more feedback as to what was the problem that occurred.

In any case I just wanted to point out that if you only move the PSres.bak file back to PSres.upr be aware that the PSres.upr file will not have references to the new font you added.

Thank you for all of your responses. I am back to trying to load the fonts again, and it seems to be moving the PSres.upr to the PSres.bak and not running the XYV_EXECS/bin/makepsres program to recreate the PSres.upr file. I have gone to the XYV_EXECS/bin folder and am not seeing that there is a makepsres program inside of the folder.

Thank you for all of your responses. I am back to trying to load the fonts again, and it seems to be moving the PSres.upr to the PSres.bak and not running the XYV_EXECS/bin/makepsres program to recreate the PSres.upr file. I have gone to the XYV_EXECS/bin folder and am not seeing that there is a makepsres program inside of the folder.

Pam, I think you just found the error.
There should be a makepsres in your XYV_EXECS/bin folder.
If you have a backup you might want to retrieve it from there
Or alternatively you might want to contact support to help you out.
And then you might want to worry about how the makepsres utitliy ever went missing from your system