Squashed commit of the following:

commit 6252712dd81462c3e6bbf14ccecaa2b0ccc9fae2
Author: Reinhold Degenfellner <reinhold.jun@degenfellner.com>
Date:   Tue Jul 15 08:52:43 2014 +0200

    more verbose errors

commit 33f0e301b184f39218de6434235b7e3bae50db68
Author: Reinhold Degenfellner <reinhold.jun@degenfellner.com>
Date:   Tue Jul 15 08:50:05 2014 +0200

    use available log path