How to solve problem when upgrading to Twonky version 7.3?
We don't know for sure what happened but in case your frame can't recognize your Twonky DLNA server after an upgrade, especially to the latest 7.3 version try this:
First uninstall completely any version of Twonky you may have, then reinstall a fresh new 7.3 version.
This solved the issue for him!