yeah i had issues after installing - try installing the 7.3 upgrade, but enjoy the 300meg file ok.
not had many issues so far - then again i'm seeing more and more jobs in indesign now - which is so nice! we've had a couple of pdf's supplied by quack and thankfully (luckily) they were not complex with transparency and stuff
if we can, and its a big if, we now pdf out of quack and use indesign. quacks hi-res preview doesnt work for positioning our cutters and cartons nicely, so i just give up with this crap - give me whatever shitty pdf you can quack - i'll fix it and do it in indy