Burdekin tutorial crashes (but would happen to any tutorial) when Naomi data imported. steps:
8.1 File > Open. Choose > Tutorial > Burdekin.
8.2 click the Import tab. Click the Temperature tab.
8.2 Import either of the t.dat files from another project (the Namoi).
8.3 After selecting a column and trying to import the data, get 'Assertion Violated' message.

(Well trapped, but then bows out ungracefully!)