Sorry to hear that as late as 2013 MixPad users are still encountering the problems in V 3.55 as were happening in V2.XX.
I chose MixPad in the past because it was all that I needed: multitrack, clean layout and good playback...when it doesn't crash or can't open mpdp files from earlier
versions. Kinda frustrating...when was the last time you saw MixPad in studio?