DVD error message – Looking for Solution

Hi all,
I am using the Vuze DVD burn software. I had a Vuze library in my C drive occupying a lot of space so I moved it to an external drive to free up my space. I also made some changes in the default directory and now when I am trying to burn a DVD I get an error. The screenshot of the error is attached below:

Error
vuze dvd burn Error
DVD Burn encountered an error.
Failed to create working directory 'K:Vuze DownloadsVuze
DVDs2012-04-22_1'. Please make sure the drive is plugged in, and that you
have permissions to write to this path.
Close
Can anyone please tell me where I am making a mistake? I have no idea where I am going wrong.
Please help me get out of the situation.
Regards,
Jack
