Ahh yes, this is an error that's coming up because the js32.dll was built with MSVC.net. If you can download that dll and place it in your Windows/System32/ directory, I believe it will work, however I am currently in the process of building the .dll with a different version of MSVC so the problem will not occurr in the future.
my friend has gotten it working now, but we can't seem to get other people to connect. What is the best way for other people to join his server? UOgateway needs you to have a webby to add the server? Or is there a way to change the login