Found this on the Dieselplace.com forum:

Q - How many vehicles can I tune with my interface?

A - FlashScan V2 can store up to 221 VIN Licenses – a VIN license can include BOTH ECM and TCM, giving better value for money.

I tuned my LLY Dmax with my V1 Flashscan, and transferred the license to my V2 when I upgraded awhile back. Supposedly, I'm supposed to be able to tune my Allison TCM with the same license as my ECM? I tried to flash my TCM and it asked for a license slot...

What do I need to do to marry my ECM and TCM together under the same license?

Thanks,
Jeff