eCart Update 6.1.0 solved the local checkout server behavior for me
Hey Christopher, I wanted to let you know that I had the same problem with the "local checkout" server behaviors not being available. I upgraded to 6.1.0 to get the benefits of MySQLi and to my surprise the "local checkout" behaviors were available! I'm running CS6 on windows 8. Anyway, just thought I'd let you know.