Originally Posted by TwinsPoppa

Not sure but weasel said something about if your X is coded with newer version software you could not use the older software to code/program. For example, I use DIS v43 now but if I later use DIS v44 on my X - I can't go back and use v43 successfully.

Maybe you need to use SSS which is the software used after v44. Again, I don't really know. Hopefully weasel or killcrap might be able to shed some light.