Downloaded and installed Repetier-Host V2.1.6 on a new machine running Win 7. Had previously run it on a machine with WinXp with zero problems so I knew what to expect starting and running the program.
Started it for the first time, getting a very strange appearance. Program launches but the viewing pane on the left side never seems to load or update. Loaded an stl file, it doesn't show up. Open a setup window, close it, part of the setup display stays in the left pane. Nothing I can seem to do changes or updates that left pane from whatever the last thing I did that overlaid that window.
Example: File>load>somestlfile. File loads, cura engine will slice it but the left viewing pane still shows apart of the load directory window after loading.
Example: Click on the temperature curve tab brings up a temperature window. click on 3D view tab, nothing changes. Last op still owns the window.
The log file scroll at the bottom doesn't seem to be generating error messages.
Sorry if the explanation seems a little strange but the operation is strange. Ask some questions if that will help and I will try to look for stuff.