Extra trailing slash after permalink[Global Translator ]

hello every

I currently using global translator 1.1.2, and I found the translated post’s permalink always has an extra slash at the end, eg,

https://abc.com/my-post.html
with be translated into other language like this:
https://abc.com/de/my-post.html
but when open it in browser, it redirected to
https://abc.com/de/my-post.html/

I am using WordPress 2.7, any one has the same problem? Do you know how to fix this?

Thanks!