Used to work on iOS 5.x now errors on iOS 6.1

I love this app, but since I updated to iOS 6.1 I keep getting Failed Write Error (0=! xxxx) when I rename a folder or file, It would be nice if the developer updated it and fixed this issue, the support page is in Chinese and Is just too hard to leave a comment there.
The app is worth getting once it gets fixed and it works right again.

Lulolulito about FTP Sprite+