When changing the path for a single file in the file encryption dialog the save file dialog does not have a good default location. It should either be the last used folder or the folder where the original file lies. It should also have the name prefilled and the file extension should be set to the file extension selected for the file type.

If the user is not attentive they can change the file extension to e.g. foo.txt and then it looks to windows as if the encrypted file was a normal text file. We should try to assist users in avoiding this.