r37.1 crashes for me as well (XP SP3 32b), r36 works fine.
This error suggests that invalid opcode is executed (haven't disassebled however), which suggests that the latest version was compiled with SSE2 enabled (ancient hw here :>). Or at least some parts of it like player routines/libs, because xmplay starts fine and about + config dialogs for this plugin can be displayed, as well as xmplay does retrieve song information through this plugin [track info] and error pop-ups on play.