Can't run lldb debugger in Windows

In Qt Creator 3.4.1 on Windows 8, I have the lldb/clang/llvm suite installed and can build and debug from the command line.

When I try to debug using the Start and Debug Esterna Application... option, it fails saying that c:/Program Files (x85)/LLVM/bin/lldb.exe can't be found.

I have it configured in the kit and in the debugger section and it was found by both the automatic debugger discovery as well as by adding it manually using the browse button in debugger management.

My guess is that it is using the / slash instead of \ when trying to start the process. It lists the path with \ in the management screen, but the error window that pops up shows the xnix / slash.

I've attached a screen capture of the popup boxes that appear when I try to run it.

I have checked, and lldb.exe is in the correct location. It is also in the path, but the management screen won't let me enter it without the full path.