Upgrade PHPBB from 2.0.19 to 2.0.22

I upgraded my G2Soft Supporting forum yesterday.
The latest one is 2.0.22.
It took me about 15 minutes to upgrade it from 2.0.19. Easy and smooth.
The PHPBB can be downloaded here.
The PHPBB is simple to upgrade, but the mods I installed are not working any more. I have to fix them or install a updated version.
I use two mods, Userlist and attachment.
I found Userlist 2.0.6C and install it in 10 minutes.
The Attachment mod is so complicated. I spent over 30 minutes to go thought lots of files to do the modifications.
Now everything is fine.
Thanks to these author of Freeware.