I am not sure if my mail reached the support so here I repeat.
The song tempo envelope is uncontrolable, the points jump as they like by 20-30 BPM, sometimes refuse to move horizontaly or vertically or make jumps even by 60-90 BPMs.
Have serious problem with 70 minutes remix the only way is recording some short parts, just for the set tempos then deleting the points but it is still so complicated because of the "wild" behaviour.
Live 4.1.4, XP home, P4 2.8 G,1G Ram, 7200HD