Was just about to post that the first time I applied a CSP preview to the Ferrari 599 GTB Fiorano by LaMorte, it was all blue crystals and hanging off the side of the screen. I just hit the 'update previews' button a second time and the car is now centred and rendered properly.
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It seems CM sometimes struggles to resolve the code the first time, but gets there in the end.
If anyone gets janky results with certain cars, just try another pass.
Edit: HA! One skin at a time is OK but I tried updating all of the Fiorano skins in one go and got this:
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So yeah... something isn't quite right somewhere.
Edit: restarting CM seems to fix things... until they bork themselves again. Rinse/repeat.