3829425 - Why am I receiving Error 500 when trying to add Travel Wizard User permission to a user under User Administration?

When trying to add the Travel Wizard Permission to a profile I am getting an error message.

I checked off the Travel Wizard User permission on a profile but when I try to save, I am receiving the error "The server encountered an error and could not complete your request. If you continue to experience problems, please contact your Company Administrator or Help Desk. (Error 500)" , KBA , CON-CA , Cross Applications , CON-CA-ADM , Administration , Problem