Arduino on Xcode Project — Official Thread

Hi,
I've just updated to embedXcode+113 in Mavericks. However when I try to create a new project ,set the USER_LIBS_LIST = 0, and build it. After successfully compile the project, all the files in the left project navigator disappear except the project file. If I click this project file ,an error diagram pops up "The file couldn't be opened".
If I remove all the user library away, this problem will no longer exist. However if there is any library in the library folder, this problem remains.
I turn back to the ver.110. There is no such problem in it.