As your skin is listed in the supported skins for TvTunes:
I thougth that I would post on this thread to let you know that the way the hooks from the Skin to TvTunes work is changing.
There are 2 main changes.
1) TvTunes will now (From 5.0.2 - which has recently been published) run as a service, this means that there is no longer a need to run the script every time the window loads, this means you can now safely remove the:
<onload condition="Skin.HasSetting(ActivateTvTunes) + System.HasAddon(script.tvtunes)">RunScript(script.tvtunes,backend=True)</onload>
From the top of your window XML files.
2) The way that skins should calculate if TvTunes is running has changed (Previously there were 2 different properties, TvTunesIsRunning and TvTunesIsAlive). Now there is a more generic PlayingBackgroundMedia that should cover a wider range of similar addons should the need arise. This can be checked as follows:
I have created a pull request for Confluence which should give you a very good idea of what has changed and help highlight how this may impact your skin:
Some more information can be found on the TvTunes wiki:
The old method will still be supported for the time being, but will be moved after a release has elapsed.
If you have any questions, then please post to the TvTunes thread.