Download Lua 5.1.4 and run the file through that. The debugger doesn't appear to support 5.2 (crashes the target process). You will need something like `io.read("*line")` at the top so the debugger can attach. Once that's done, just attach by going into "Debugger > Processes..." and choosing lua5.1.exe.

ah; you are correct. 5.2 was the issue. once i switched to 5.1.4 debugging worked.