Champion of the Wild (both Archery and TWF versions) from Complete Champion are supposed to remove spellcasting

Thanks. Both fixed. Also fixed some other issues with the other PrC's from Races of Destiny.

Thanks. Fixed.

The feat Metamagic School Focus should limit its choices to what school has been chosen as a Specialization school, and what has already been picked under the feat Spell Focus (which Greater Spell Focus does correctly).

The feat "Adriot" Flyby Attack should be spelled "Adroit".

Dusklings (Magic of Incarnum) don't have their type and one of their subtypes show. They are attached to the race, they just don't show up.

Both fixed. Thanks.

I see Type - Fey, Subtype - Extraplanar, and Subtype - Incarnum when I select Duskling as a race. Do you have any classes, templates or anything else that could be affecting the type/subtypes?

Found it. The scripting for the True Incarnation ability of the Incarnate class (Magic of Incarnum) is borked. It's deleting the type and subtype before level 20.

It needs a doneif and not to disable subtypes (why the script is disabling subtypes, I don't know)

I assume I must have done that due to the vague description about how the character changes. Regardless, I've updated the scripting to not remove previous subtypes and to not do anything at all until level 20. Thanks for the report.

When a template replaces bonus feats, it moves one bonus feat farther down instead of replacing it. For example, a level 8 fighter with resolve, aligned strike, and elusive attack (replacing the feats at 2,4, and 6) still has 3 bonus feats (should have 2, one for level 1 and one for level 8) and the overview shows two bonus feats at level 8.

Variants that replace a thing that has a bootstrap don't turn off the bootstrap (example, replacing the rogue's trapfinding only replaces the class ability and not the bootstrapped ability)

Can you be more specific about which templates and class variants? Unfortunately, there isn't a way to affect all templates/variants to fix issues like this. It will have to be done on a case-by-case basis.