error: option -t not recognized

[mdel...@lexmark.com]

I've installed lettuce 0.2.15 (kryptonite release) and can successfully run it by passing a specific feature to it but I cannot use the -s or -t flags.  I get an error saying those options aren't recognized.  -h works, looking at the source it seems like it should work, I'm very confused by this. Has anyone else experienced this or have an advice for resolving my issue?

Thanks,

Delfino