Could you be more specific? Which directory doesn't exist? Have you tried to create the directory yourself? What "apps" are you trying to install? This is a forum about user interface addons for World of Warcraft; not a community of psychics who know all about your problem installing unspecified programs on your Mac and have just been waiting for you to post some completely vague and grammatically incorrect plea for help.
well sorry for the breff statment im also new with mac if i had a pc im sure i would ot have this problem but for example the app "repwatcher" when i go to install it this message comes up------- can,t create file 'repwatcher/repwatcher/repwatcher/repwatcher.xml'(error 2:no such file or directort) dose this mean that i have to create this file and if so where would i put it in the wow files...... i didnt mean to be breff but this is geting agrovating!! also when i launch curse client it will take me 8 times to get the program this come up deleted stale lock file /users/john/curseclient' then the program shuts down thanks for the help