Closing FC when transferring causes an error

[bartoszr]

Hi,

I know that this is not a typical user behaviour, but when I have FTP transfer in the background and close FC, it dies with an error message that the dialog does not have a parent. IMHO, FC should check for any existing background threads and show a confirmation dialog if any such thread exists. Anyhow, the error message is a bug, and the rest is most likely a feature request.
Cheers
Bartosz