Thanks Darren,
De 397 model has type 2 lines which are used for indicating extremely simplified wires.
By design LDCad deems anything with type 2 lines a part and as such tries to prepare the whole model for rendering as a single entity. This results in too much data (6.5 million vertices) which in result cancels the preparation. The cutoff is controlled by an option but you generally don't want it to try as it might take ages to prep.
To fix this you simply move any type 2 stuff (together with some supporting parts etc if needed ) to a submode.
I've attached a corrected version in which I have done this for you.
De 397 model has type 2 lines which are used for indicating extremely simplified wires.
By design LDCad deems anything with type 2 lines a part and as such tries to prepare the whole model for rendering as a single entity. This results in too much data (6.5 million vertices) which in result cancels the preparation. The cutoff is controlled by an option but you generally don't want it to try as it might take ages to prep.
To fix this you simply move any type 2 stuff (together with some supporting parts etc if needed ) to a submode.
I've attached a corrected version in which I have done this for you.