uTorrent Portable [Error: WriteToDisk]

I newly installed uTorrentPortable on my desktop. With no configuration I started a torrent file. It's downloaded at full speed. After download ends utorrent gave an error about I guess download directory. Following screenshot tells what exactly happens.

http://img706.imageshack.us/img706/7656/adszksv.png

I tried several different torrent files. It's kept on giving this error.

I think this issue is concerning with the download directory ("..\..\Data\downloads"). When I changed download directory to ,for example, "C:\aa", no more errors occured.

Anyone who face with this error?