Combine ZP crashes all the time (win7 64bit), and the other tool is too expensive.
ah I forgot to mention. APG does have the ability to use zerene stacker tool nativley as plugin.
1. add an empty Group
2. klick the "puzzle" Icon the plugin wizzard.
3. choose external stacking
4. use the path to the zerene stacker
I remember talking with Alexandre about which stacker I've most revenue from and I also tended to Destenys helicon tip... Alexandres tip was to use zerene stacker, because the tool can be used as plugin in APG and helicon not (but this info s now more than one year old, so maybe something changed here...)
so initially back to your entrance question. no APG cant do stacking nativeley, but it can be done by using zerene stacker.
In practice I did my stakcing panos finally standalone, because the thousands of sourceimages could not be handled by my 8GB RAM PC at that time.
EDIT 20:33 screenshot now added...