Someone I'm helping with an application needs to locate her debug.keystore - mine is in my .android folder, but when I navigate there on her computer it is not there.
Does something need to be done in order for it to appear? Where is it / how can it be generated again?
According to the documentation, performing a build in Eclipse or using ant debug should automatically generate ~/.android/debug.keystore.
But in case this doesn't work, you can create one manually by running:
keytool -genkey -v -keystore ~/.android/debug.keystore -alias androiddebugkey -storepass android -keypass android -keyalg RSA -keysize 2048 -validity 10000 -dname "CN=Android Debug,O=Android,C=US"