I used the 6-3 nightly version and for the first time I was able to upload 1.1.70 FW!!! It didn't give me a bootloader error like with every other VT version (I didn't try the 5-21 nightly version)! I noticed that it doesn't have much if any of the F1 help files, but otherwise worked well setting things up in the various pages.
The main issue I have with it is that it crashes if I try to open tps calibration (not a big deal) and wideband calibration (a big deal, since I'm not sure how to set it... can I use the same calibration procedure as through the terminal program in 1.0.73?)
Also I tried connecting to the ecu with earlier vemstune versions (3-8 and 4-28) to see if I could set the wideband calibration and neither recognized that an ecu was connected...