Error when renaming account request+issues

Faith Meckley registered for an account at http://climatemarch.718.cldstr.com/wagn/ and accidentally put her name as "Faith Meckely". She registered again with her correct name, but all of the plus cards were filled out on the wrongly named one. So I deleted the second one (with the correct name), then tried to rename the one with the wrong name to the correct name, and got this error (a few minutes ago).