2.3.4 on 10.9: can't "port install openmotif +universal"

[Kevin Layer]

>> You had xorg-libXt installed with the +universal variant, which was
>> required for xorg-libXmu because it too was installed with the
>> +universal variant. When you installed xorg-libXt with the
>> +flat_namespace variant but without the +universal variant, that
>> broke xorg-libXmu. MacPorts "fixed" it by reactivating the copy of
>> xorg-libXt you had installed with the +universal variant but
>> without the +flat_namespace variant.
>> 
>> If you want both variants, you have to specify both variants:
>> 
>> sudo port install xorg-libXt +flat_namespace +universal

That worked, thanks.