Truck (trans) vibration at high RPMs and Error Code 150

[RobbyMartin]

I have a 2 part question/issue that I need help with.

Part 1:
I had an engine swap done from a 4.6 to a 5.4 and since the swap, at high RPM's, my transmission vibrates before shifting. It didn't do this prior to the swap so I'm wondering if its a tune issue or something else. Bill wrote a 5.4 stock tune for it so I'm wondering if something got messed up along the way or something needs adjusting.

Part 2:
I received Error Code 150 after attempting to install my custom tune and Bill was able to get me back up and running. However, he told me not to attempt to install it again until he found out what was causing this issue but I haven't heard back from him and that was weeks ago. I've attempted to PM him but I guess he's extremely busy. Does anyone have any ideas on this?

Thanks for any help.

'02 4.6 to '03 5.4 swap!