Actually, I’m a bit surprised myself, too. I’ve done dozens of upgrades and never seen any issues on XP so far. I can’t say the same about other OS versions. I can’t speak for the Home Edition though, but I assume it uses the same folder; Program Files.
Windows XP is usually the less problematic OS as far as upgrades of BitComet go, since it doesn’t use data virtualization (along with the rest of the User Account Control) as Vista and Windows 7 do.
This is a little cumbersome, but here I go.
Start by looking at the system.use_app_data option on the Options–>Advanced page, in your current (updated) BitComet version and write down the value it has (False or True).
Then go back to your older version and check the same option again. If they are different, then this may be the problem.
You may have to manually move all the files from one place to the other.
But we’ll get to that only after we make sure that this is the issue, because this shouldn’t be happening.
So, do this for starters, if you want to troubleshoot this problem.
Also, under what account type (administrator or Limited User) are your running BitComet?
From what account type did/do you perform the upgrade?
@ TUUS: You give me way too much credit. Actually kluelos and I took turns at editing that topic (in the last months) and adding new info along, as we found new angles that needed covering, from the discussions in the forum, mostly.