The address must only contain numbers and lowercase letters

[themusicgod1]

Most of the time(but not all of the time) if I try to change my torChat ID (by substituting letters for numbers and vice versa) I get "The address must only contain numbers and lowercase letters"
this usually only happens if there is at least one number in the torChat ID that I am trying to use.

example:
themusicgodzzz1z fails with this error message
themusicgodzzzzz does not.

torchat: 0.9.9.553-2 ( TorChat 0.9.9.553 (svn: r553) )
ubuntu 17.10 artfuls

Runtime environment:
  Python: 2.7.14.final.0
  wx: 3.0.2.0 gtk2 (classic)

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: torchat 0.9.9.553-2
ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
Uname: Linux 4.13.0-16-generic x86_64
ApportVersion: 2.20.7-0ubuntu3.1
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Mon Nov 13 18:35:21 2017
InstallationDate: Installed on 2017-04-18 (209 days ago)
InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
JournalErrors:
 Error: command ['journalctl', '-b', '--priority=warning', '--lines=1000'] failed with exit code 1: Hint: You are currently not seeing messages from other users and the system.
       Users in the 'systemd-journal' group can see all messages. Pass -q to
       turn off this notice.
 No journal files were opened due to insufficient permissions.
PackageArchitecture: all
SourcePackage: torchat
UpgradeStatus: Upgraded to artful on 2017-10-19 (25 days ago)