I have two problems on Logos 5 which I am using on Mavericks (Macbook Pro 15). First problem is Logos 5 does not finish the process of synchronizing. So, if I want to shut down it, I have to push "Exit Now" button. But the big problem appears in this finishing stage. In other words, I cannot shut down Logos 5. The only thing that I can get is to use the option of "Force Quit." One week ago, this has been occurred. My Macbook Air also has same symptoms. So, I think the reason that I am experiencing is not for my machines but for Logos 5 software. Let me know how to fix it.