The good news is that the new install has fixed the log file problem. I think I know what the problem was but I don't know why it made a difference: Basically my old install of x-plane was on one SSD, and I used a symbolic link to enable me to have the Aircraft and Custom Scenery folders on a different drive. Up until now this hasn't been a problem. Having worked through everything else, I decided to stop doing that and install the new installation on the larger drive and therefore not use symbolic links - low and behold it's all working perfectly now - so it seems the TBM900 parser is sensitive to symbolic links? Maybe?
Anyway, thanks for your help - new logs attached for your perusal - apart from some earth_nav data issues it's all working perfectly.
Oh and thank you for a stunning product too, and helpful support,
I'll update here if I can work out which plugin messed with the VR librain.
Best,
Chris
Log.txt
TBM900_Log.txt