I have bought a couple modules from Knowband, neither worked 'out of the box', and required their payed support that was included when I bought the modules. One of the modules has been updated twice since I got it, which is good, bug fixes are always appreciated, but neither new version would work without their payed support. They are making modules that REQUIRE you to have payed support to use. I highly recommend anyone thinking of buying one of there modules, stop, don't do it, unless you feel like paying for support indefinitely.