Sorry Shiela as it seems your thead kind of got hijacked by Tboz and now things are all messed up... *UGH*.
Please repost more info. On this and I'll respond pretty quick off, OK?
If the leak doesn't show up until you drain the tub then the gasket is certainly suspect here... could be that you didn't tighten the strainer enough, maybe?
This tub doesn't have a tub liner does it?
Back to you...
Mark