This section covers any new errata discovered that old errata by Wizards of the Coast missed. Usually, a note will only be added here if explaining it in actual text would be clumsy. In such cases, the correction will link to a longer explanation here. Such corrections do not have to be taken as canon, but each should be given serious consideration.
When you find a disagreement between two D&D rules sources, unless an official errata file says otherwise, the primary source is correct. One example of a primary/secondary source is text taking precedence over a table entry. An individual spell description takes precedence when the short description in the beginning of the spells chapter disagrees.
Another example of primary vs. secondary sources involves book and topic precedence. The Player’s Handbook, for example, gives all the rules for playing the game, for PC races, and the base class descriptions. If you find something on one of those topics from the Dungeon Master’s Guide or the Monster Manual that disagrees with the Player’s Handbook, you should assume the Player’s Handbook is the primary source. The Dungeon Master’s Guide is the primary source for topics such as magic item descriptions, special material construction rules, and so on. The Monster Manual is the primary source for monster descriptions, templates, and supernatural, extraordinary, and spell-like abilities.
Source: Dungeon Master’s Guide (version 3.5) errata list.
The problem is that the MIC versions of many of these are…incomplete. The prerequisites in the MIC for many of these list magic item creation feats instead of (not in addition to) the psionic item creation feats for the original XPH item it duplicates. Sometimes those prerequisites include the psionic powers needed (along with a substitute spell), sometimes they don’t. Some of these items, like the psionatrix, are only useful to psionic classes—yet, using that item as an example, the Craft Universal Item (a psionic item creation feat) is now Craft Wondrous Item (a magic item creation feat).
It might be understandable if wizards saw a generally useful psionic item and thought, “Gee, that’s pretty neat. I’m going to come up with a way to make a magic item based on that psionic item.” But even those items that list both prerequisite spells and powers only lists the magic item creation feats, not the psionic ones.
Ultimately, this was solved by making two separate entries for prerequisites for magic items that can be made by spellcasters or by psionic manifesters. Prerequisites for the former are categorized as Prerequisites (M) for creating that item with magic; the latter is categorized as Prerequisites (P) for creating that item with psionics. Some psionic items like the psionatrix have no business being made by nonpsionic classes and have been reverted to their original prerequisites from the XPH.