Does not happen on a fresh install. Here is the relevant stack trace.

2013-12-18 10:52:41,101 ERROR info.magnolia.module.InstallContextImpl : > Could not install or update backup module. Task 'Bootstrap' failed. (IOException: Can't find resource to bootstrap at /mgnl-bootstrap/backup/config.modules.ui-admincentral.config.appLauncherLayout.groups.dev.apps.backup.xml)
info.magnolia.module.delta.TaskExecutionException: Could not bootstrap: Can't find resource to bootstrap at /mgnl-bootstrap/backup/config.modules.ui-admincentral.config.appLauncherLayout.groups.dev.apps.backup.xml
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