After quite a long lay off during summer have returned to working on one of my layouts. I began by downloading the beta to bring it up to 109037. This was probably a big mistake! When I open a session it had placed a few of my consists in the top corner of the layout under a hill with the message 'derailed'. A steam train emerges from a portal (which it is programmed to do as part of the session) but minus the carriages and when you click on it, it can't be selected. What is going on? Is this to be expected with the beta? I have saved the layout and session with a new name hoping that this would be a cure - same result! It seems to have screwed up the portal manager and elements of the session. Frustrating!