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It's one of those 'Invalid Instruction' errors; a relative of the 
BSOD. Yes, it probably is an SQLite bug. IMHO though, it 
might be due to a malformed SELECT statement in roundup.

As for tests, pysqlite runs all tests without error. I haven't 
run roundup tests yet.

Give me an hour or so and I'll get you the exact error 
(though I don't think it'll help much) and run the roundup 
tests. I'm not at home right now.

If it helps, I just changed the backend used from bsddb to 
sqlite (export old database --> import).