Doug,
I have to echo the comments above. I struggled with the gear section and lost all of my setup info from my previous dives. When I tried to set up some typical gear profiles, it would act strangely and not save the right info from dive to dive.
I am concerned that this is being released as a production version when it took about 2 minutes for me to find major issues that cause me to go back to the previous version.
The new tank part is good, but as stated before, if you end up losing your tank info from previous dives, it is not a worthwhile upgrade and some note should be made to warn folks.
The biggest issue with losing the gear info is that I could not go back and check what weight configuration I used with each gear configuration(drysuit with 100cf steel vs 3mm with alum 80, vs shorts with 80 alum, etc)
thanks