DDD 3.3.12 (i386-apple-darwin17.3.0) gets Xt error

Hossein Moein <[email protected]> Tue, 2 Oct 2018 08:37:34 -0400
Newsgroups gmane.comp.debugging.ddd.general
Message-ID <[email protected]>
Hostname:~\> ddd
Creating "/Users/username/.ddd/sessions/"...
Creating "/Users/username/.ddd/sessions/"...done.
Creating "/Users/username/.ddd/themes/"...
Creating "/Users/username/.ddd/themes/"...done.
Error: Unresolved inheritance operation


Xt error (Unresolved inheritance operation).


Oops!  You have found a bug in DDD.


If you can reproduce this bug, please send a bug report
to <[email protected]>, giving a subject like


    DDD 3.3.12 (i386-apple-darwin17.3.0) gets Xt error


To enable us to fix the bug, you should include the following information:
* What you were doing to get this message.  Report all the facts.
* The contents of the `~/.ddd/log' file as generated by this session.
Please read also the section "Reporting Bugs" in the DDD manual.


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ddd: Cannot save options
Hostname:~\>