Netbeans error: Project Folder already exists and is not empty -

i installed netbeans , because reading book : java in 21 days. i'm complete novice in world of programming. when try open new project in netbeans , error : project folder exists , not empty . deleting nbproject folder , restarting ide doesn't solve problem. can me?

i have netbeans 7.3.1 installed on mac (10.8.4) , works flawlessly. recall having similar issue, however, when trying create project directory thought empty (it wasn't...). me matter of deleting project directory. you, found same answer while googling @striders. if using mac, there won't ".netbeans" folder containing "userdir"; rather, directory ~/library/application\ support/netbeans/7.2. understand "7.2" "userdir". if solution have netbeans recreate directory, delete , relaunch. tested deletion of folder, , netbeans create on start up.

http://wiki.netbeans.org/faqwhatisuserdir (info on directory...)

http://forums.netbeans.org/post-59080.html (someone said worked...)

cheers