I use xcode 3.2.4 on snow leopard. Today when I tried to save a file on my project I get an error message saying: The document \"nameOfFile.m\" could not be saved. I tried reins
Not sure why but the temp files ended in a odd state. In "/private/var/folders" I simply removed all the folders and it cleared up the problem
cd /private/var/folders sudo rm -fR *
Note: never do a "sudo rm" unless you really know what you are doing. It can cause irrecoverable damage