im having the same problem as you stealthy. what i think it is is that some songs may cause it to freeze at the first konami screen. i dont know how to fix the error though so what i have done is to try and single out the song by adding only a certain few with the unpackager. so far i havent been able to get alrygone.zip when added, past the konami screen. someone please lemme know if they have, im not trying to knock the maker of that one. also is there a limit to how many songs we can send to the box i.e. how big the songs.dta can get in size. i wanted to add every song from the ftp but when i did it didnt get past the konami screen. it could have been the same deal with alrygone.zip or others so i what im gonna do for now is add a few at a time, and then try and see if itll boot, then start again.
@stealthy, the problem is limited to the songs.dta and db.dta just delete those, start again with the original .dta's or last working ones, and then add again and transfer. the files in songs\ or xadpcm\ can be left behind the game still boots even though i have 7gigs of .wav files from all the ftp songs, in xadpcm\ and even though they are not even set to be used. its pretty much trial and error with these songs so just go at it with process of elimination to find the one that is crashing you at boot. then if you do pinpoint it, post the name of it here and maybe someone here can tell us if they were able to get it working.