Its not that I have not filled the path in, but the 1.9.1-beta version of the ExportTool is bugged. When a directory is selected the path goes to the opposite field as illustrated here --> https://imgur.com/F7uXyAa
Its the first version I tried so I posted here :P
I figured it is not the intended behavior so I tried and older version ExportTool 1.8.7-beta and it worked like a charm. <3