cip : if everything is the same, why MAKE a 1.6.0 version? 1.6.0 fixes bug in the most important 'plugin' of all, the emulator itself, that thingie that does the instructions, manages memory and much much more.
As said, 1.6.0 introduced some new bugs with many games : final fantasy 9, chrono cross and apperantly, this game too.
Does that help you understand?