When changing locations or picking the download location I get extremely frustrated with the tree view you chose to use for folder selection. The biggest problem here is that this dialogue is incredibly outdated and very slow in terms of navigation since depending on the structure of your drive you may have to navigate to a rather deep folder which takes is problematic. on windows builds it is more effective to use the native explorer open dialogue because this allows the user to quickly navigate to folders by using the side bar shortcuts or even type the path directly which is sometimes a lot faster than clicking through the tree.
Essentially I am asking you to please replace this
http://static.ccm2.net/ccm.net/pictures/vAeuCLCP-tixi5-s-.png
with This
(Pic removed by Mod and sent to devs)
Or if this is not feasible at least add a text box allowing manual path entry