Long listener, First time caller. First off thanks for the hard work you and previous project owners have put in.
I was having problems with xdelta not doing anything as well, but while doing some cleaning on my pc I came across a file called "Dr_patched.nds" in my C:/Users folder. I'm guessing the Dr part came from user name on my pc. Anyway I booted up and it was patched rom, so I guess if anyone else is having trouble they should give the folder a look see.