I'm using TwonkyServer (version 6.0.39) on a QNAP NAS drive and accessing my music using the Naim app on an iPhone. Recently I had a problem seeing artists / albums correctly so cleared the image cache, as well the UPnP cache in the app to fix it. However, I have now lost all album artwork despite restarting the app and even deleting it and reinstalling. On an iPad (on which I did NOT clear the caches) I can still see the artwork. I've also tried a rescan of content directories in Twonky.
It's not clear to me whether this is a problem with the app or with Twonky. Can anyone give me any pointers which might fix this? Thanks.