First off, fantastic plugin! It's truly one of a kind, and the fact that you are offering it for FREE is incredible. I work for a non-profit, so every dollar we save counts.
My problem is this:
On my dev site,using the "powered-by" theme the WP-Members form Displays, but I cannot actually click on any of the fields. This only happens in Powered-By theme and child-theme I am working with.
If I remove the float on #wpmem_reg, #wpmem_login in my CSS file, the form (and it's :focus pseudos) work fine. That's what I'm doing right now, but do you have any ideas off the top of your head on how to sort this out?