It's hard to say offhand, except that you might first update your binaries.

Since it is failing in the add_edges function, start by trying it without -AddEdge.
You could also try uber_align_test.py to try various cost functions.

Note that we generally suggest aligning the T1 to the EPI, which works pretty
well (assuming there is contrast in the EPI). Having the same slice pattern does
not matter too much.

- rick