No media files are copied when the 'default' handler group doesn't have a mediaHandler

[KevinJump]

If you disable the MediaHandler in the default handler group in the main uSync8.config file, no media files are copied between servers.

When you push media between servers, there is a point when the source server asks the target what media files it requires. This is done by comparing the file hashes of the media file on disk with those in the config files passed by the source site.

at this point the target server uses the "default" handler group to compare the media files, if you have disabled the media handler in the default group this returns an empty list, and no media is copied.

the fix is to make sure the media compare is done with the 'publisher' group which exists for this purpose and is used by all other functions in the sync.

[KevinJump]

fixed in 8.4.2