Songbook HD for iPad problem

[beckphotonik]

I have purchased Songbook as an iOS alternative to BubbleUPnP but it has a problem. Like its ChordHD clone, the app starts fine and the first album plays ok but selecting a second album causes the play functionality to freeze. I can still move around the app but cannot start a track without a system reboot. My system has changed since I was using the ChordHD app so the only commonality is MinimServer and Songbook/ChordHD. I notice another forum member uses Krell Connect, another Songbook clone, with no problems so I am puzzled as to where the incompatibility lies. FYI, router is BT HomeHub 5b with WiFi off, an Apple AirPort Extreme provides the wifi.