Well, if you fancy having a go at tracking the problem down yourself using the source & a debugger, there's a page I've just put up on the author(Kovid)'s wiki that might help you to get started -
https://libprs500.kovidgoyal.net/wik...owsDevelopment
Beyond that, I suspect that WinXP/Japanese is too far from the 'development' environment (linux?) to be able to be supported without extreme measures.