Well yes a lot of things can cuase this problem but I have seen a LOT of Mopar tailshaft housing break and all but 1 were from the driveshaft. Either to long, or two short or not balanced. With balance being the usual cause of failure. The fact that it is new means little unfortunately these days. Since it is a new shaft and this occurred it woudl be where I would start. Assume this car was working with a different set up before??