The version that that i got from yamaha is 4.44, and i beleive that it is the final release because on www.yamahamusicsoft.com, under the Smart PianoSoft section, there is a "is my disklavier compatible" pop up window, that mentions 4.44 being current. I haven't had any of the problems that you mentioned, but its possible i haven't uncovered them yet.
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Re: Smart PianoSoft has been released
2002-10-13 by macaw22