So, step out of the mere-usership, get VCExpress (free), get Subversion (free), get the LyX sources (free) and compile your own ;-).So mere users like us would need a special binary to test that :-)
Best regards, Olivier
VincentP.S. I'm afraid bug 5472 is not suited for generating a backtrace, as the crash doesn't occur within LyX.. It does probably within qt or a windows library.