Note that this is a cross-post - I posted almost the same thing to the SonicOrbiter forum, but I think that this one gets more eyes.
My system is as follows: Transporter5 connected to router. External ssd drive with data on it connected to the Transporter. In another room is audio equipment: UltraRendu connected via USB to DAC etc.
I followed the instructions and upgraded the Transporter to 2.8 from 2.7.
I use Roon exclusively to play music including my library, Tidal items saved to my library, and internet radio. After the upgrade I can play radio items and Tidal items listed by roon as among my albums. However, all albums with flac files actually in my system now do not play - I get the error message “Playback was interrupted because a track failed to load etc.”
From my desktop computer I can find the transporter on my network, and I can browse the file system, including /storage/usbdrive/flac_pdb where I have music files. The files are there.
Note that a long time ago I had an issue with Roon showing duplicates of my albums. The Roon “settings” for storage folders showed “Music Folder” and also sonictransport/SamsungT5/flac_pdb which is the external ssd drive with my files. By disabling within Roon the Samsung T5 folder I got rid of the duplicates. I tried mounting the Samsung drive, and re-enabling the ssd drive.
I have tried restarting everything, clearing the Roon cache, forcing a Roon rescan multiple times without any effect. Note that I have not power cycled the Transporter - the restarts have been software driven.