Did you install SP1?
Try getting the appropriate version here:
I followed the link and tried to install SP1 for Inventor LT 2014 after having gotten the 0xc0000142 error on windows 8 and it is telling me that the SP1 patch is not a valid patch.
I am running a Lenovo IdeaPad with Windows 8 64 bit.
I have already installed LT2014 and transferred the license using the license transfer utility successfully.
Any idea why I'd be having this problem?