What is exactly incompatible with CPRPlus? I want to know.
As I said before, there is no strict "incompatibility".
If you use something like
KDiff3 (which I do) to compare the files, you can see lots of differences between CK2+, CPRplus and vanilla.
Because the CPRplus guys are a friendly bunch, they have already included some pieces of code to improve compatibility with CK2+, like unique robes for Desert Mothers/Fathers.
But apart from that, CK2+ has a different set of cultures that require compatching to be using the fancy new graphical_cultures CPRplus has to offer.
And then, if you don't compatch the hurdle for unique armors is very low, meaning almost every character will wear special armor ingame, and so on...
Tiny things you
can ignore, but with a compatch you get the full features out of both worlds.
A fair warning btw: With the next version of CK2+ base compatibility will actually deteriorate, because CK2+ will add something new*. That will make a compatch even more important than before (though again, your game won't crash without it, just look strange).
*Not saying what, just teasing you
