Remove & Copy File

Apr 8 at 10:12 AM
Hi All
thanks for all answer.. i'm not sure if you had talk about this questions but i've read 20/30 pages with no answer..
If i have to Remove and Copy Files Custom Action is the only way?
and if i have only this.. why if i make a custom action after msi generation if i try to install there are dll problems?

thks all