PowerArchiver problems after reinstalling WinXP

I always use backup for files. For that purpose I am using PA. Due to some problems I encountered with my system I reinstalled Windows XP in my pc. I also downloaded the latest version of PA (12.01).
And for Legacy license I got a new registration code. After that I got some problems with my backup scripts. I also changed some scheduled tasks, but PA’s backup editor opens when a script starts. I need to run my scripts separately.
So, I’m in need of some help. Thanks in advance.
