Hello Jack,
Did you activate Locotool via the Tools-Menu? This is important, because LocoTool is necessary for the details-view and the working-area (called 'Betriebswerk'). LocoBrowser needs LocoTool V0.4.3 or better LocoTool V0.4.3b for fully operation. The simplest way: Put LocoTool in the same directory as LocoBrowser, choose LocoTool from Tools-Menu and open LocoTool.exe in the appearing file-dialog. Now the 'Details'-button appears and the elements of the working-area become visible.
Greetings
digidampfman