No one else seems to have reported this.
Just downloaded the app. In general really thrilled with the value for the price. But I must report this bug:
Any time I go to Edit > Sample > Sample set, the app displays the Sample set dialog, then immediately crashes.
I haven't done any customization so it should be pretty straightforward to reproduce.
System info: Third generation iPod touch running OS version 3.1.3
Crash on pressing Sample Set button
Yes, this was reported before
Yes, this was reported before and is fixed here. Try as a workaround fix: Sound->Create New Instrument, then Done. Now try to do the Edit->Sample->Samplesets....