Hi,
I apologize - I did not size things properly to handle slants. In general I set a minimum of 1 quart for starters thinking most people would be working in those ranges for typical homebrew, and starters below that typically don't offer much for an average person working with a 100 billion cell wyeast pack.
What I may be able to do is modify this limit in a future patch to allow much smaller starter calculations. Could a few of you send me emails so I can add you to the beta list and we can test out some of these features for a future update?
Brad