Catherine,
There are two problems with your 3dLME script:
(1) The variable "Cond" is not even modeled. So, change
-model 'Dprime' \
to
-model 'Dprime+Cond' \
or
-model 'Dprime*Cond' \
(2) The following three lines
-gltLabel 1 'MvH' -gltCode 1 'Cond: 1*month -1*hour' \
-gltLabel 2 'MWvDH' -gltCode 2 'Cond: 1*month 1*week -1*hour -1*day' \
-gltLabel 3 'avg_cond' -gltCode 3 'Cond: 1*month +1*hour +1*week +1*day' \
should be (adding an empty space after "Cond")
-gltLabel 1 'MvH' -gltCode 1 'Cond : 1*month -1*hour' \
-gltLabel 2 'MWvDH' -gltCode 2 'Cond : 1*month 1*week -1*hour -1*day' \
-gltLabel 3 'avg_cond' -gltCode 3 'Cond : 1*month +1*hour +1*week +1*day' \
Gang