This is the Pack File Manager with Attila supported starting from version 3.5.
Download Current Version 3.5.2
As usual, I'll stop maintaining the other PFM threads (i.e. the one in the Rome II Mod Tools forum), so please post all questions and problems here.
If there is anything wrong with any table and you manage to fix it, also please post here; preferrably also send me a PM with the link to the post containing your fix so I don't overlook it.
Join the Steam PFM User Group to receive updates.
In case the schema autoupdate doesn't work for some reason, you can always download the most current (and older) versions here.
Changelist:
For changes in versions previous to 3.5.0, I listed those in the Rome II Mod Tools thread.