Pictures won’t show, also tons of outdated window ids

Hi,
after going through an update hell with kodi 17 (it would be nice if future update processes could tell me, that fex. my remote.xml is outdated, because of several window ids beeing gone. Alas, now i have at least a super clean install, with tons of outdated databases removed and so on), i tried to get titan working again. Was first using the one from the beta repo, but tonight there apeared a stable release, so i choose that one.
Seems i got it working so far, however, what i noticed was, that my pictures where not shown. I could open the respective folder, they where even shown as background picture, but no slideshow, no fullscreen picture at all. I tracked it down to Slideshow.xml, which was luckily quite empty allready. So i had a look how it was in the new default skin, and there was nothing between the window tags. Thus removed everythong in titans slideshow.xml as well, and now pictures are working.

Since i am pretty clueless about what i have done there, i am not sure if that was the right way to fix that (Also afaia, as soon as the skin gets an update, this will be overwritten anywas). So could that be please fixed, if possible?

During my investigations i also noted references to now missing window ids, like mutebug, musiclibrary, videolibrary and so on. It seems to be not very problematic right now as the skin seems to work as expected, however i get tons of errormessages logged, which makes it harder for me to track down actual problems.
fex:

Code:
13:50:36.637 T:7752   ERROR: Window Translator: Can't find window mutebug
13:50:36.639 T:7752   ERROR: Window Translator: Can't find window musiclibrary
13:50:36.917 T:7752   ERROR: XFILE::CDirectory::GetDirectory - Error getting return
13:50:36.917 T:7752   ERROR: CGUIMediaWindow::GetDirectory(return) failed

No Idea what that XFILE Error means, first i thought i need that to fix the picture problem, but that was not the case.