Hello, first I want to say thank you for your awesome tool it's really helpful to me
but I saw a little bug using the "Download Manifest" option
Version: 1.0.0.0-Beta
Steps:

1. Open MLTDABD-Rel.exe
2. Go to File >> Download Manifest
3. Select any version to download (I use CloudFront latest android) and hit OK
4. "Save as" popup will appears but can't really save it
   Popup says:
   File (Filepath)\xxxxxx.data does not exist.
   Verify that the correct file name was given.

Expected result:
The file should be created and saved without this popup

A workaround that I use
I create blank xxxxxx.data file before I use "Download Manifest" and save (to replace) the file

I would like to request the feature
Now:
Tool >> Diff >> Select 1st and 2nd source and press Diff
In the diff section, You can't right-click to the list (but can select or bulk select it)

Request:
In the Diff section when you right-click to the list or multiple select the list It's should have a menu to "Add to Pending Downloads"
It's will be very useful

Concept:

Is that possible?

Thank you very much