every time a try to run any program in the android emulator, it says "unable to get signature key" along with a rather long error message. I don't know; I might have just installed the android sdk wrong. I looked into it, and it says that there should be a debug.keystore file i my ~/.android folder, but I don't have either the file or the folder. I don't really know what to do. Also, in case this helps, I'm using the gregorian calander (this seems to be the main problem for not locating the file, but it still involves the folder existng). Thanks in advance for any help.