These two seem to collide in a funny way. If you do
LANGUAGE ~English~ ~ENGLISH~ ~%MOD_FOLDER%/tra/english/game.tra~
then it will get installed properly - at first. However, when you install next mod, it will try to pull strings for weidu.log from the next MOD_FOLDER, resulting in either incorrect comments or UNDEFINED STRINGs in weidu.log.
weidu 239