Hmm, I can’t confirm it, sorry (Vista 32-bit here too).
Any additional info would be appreciated, for example:
– does it happen when you select a file while on the project page (without opening an arrangement)
– in the arrangement editor, does it matter if the arrangement is powered on/off
– do you have auto-preview turned on in the browser
– if yes, does it matter what’s the device chain on the track that’s selected when you click the MIDI file
Also, could you try with a MIDI file we also have access to? How about this one: http://www.8notes.com/scores/9764.asp?ftype=midi